Search a number
-
+
531442458001 = 7213280112
BaseRepresentation
bin1111011101111000111…
…00000101110110010001
31212210202010202002000001
413232330130011312101
532201343232124001
61044050304130001
753252432234200
oct7567434056621
91783663662001
10531442458001
1119542445a584
1286bb7006901
133b165308c00
141ba17073237
15dc561dc001
hex7bbc705d91

531442458001 has 27 divisors (see below), whose sum is σ = 669504691323. Its totient is φ = 420429456720.

The previous prime is 531442457989. The next prime is 531442458031. The reversal of 531442458001 is 100854244135.

The square root of 531442458001 is 729001.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 78615748225 + 452826709776 = 280385^2 + 672924^2 .

It is not a de Polignac number, because 531442458001 - 27 = 531442457873 is a prime.

It is a super-2 number, since 2×5314424580012 (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531442458031) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66335086 + ... + 66343096.

It is an arithmetic number, because the mean of its divisors is an integer number (24796470049).

Almost surely, 2531442458001 is an apocalyptic number.

531442458001 is the 729001-st square number.

531442458001 is the 364501-st centered octagonal number.

It is an amenable number.

531442458001 is a deficient number, since it is larger than the sum of its proper divisors (138062233322).

531442458001 is an frugal number, since it uses more digits than its factorization.

531442458001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16062 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 531442458001 in words is "five hundred thirty-one billion, four hundred forty-two million, four hundred fifty-eight thousand, one".

Divisors: 1 7 13 49 91 169 637 1183 8011 8281 56077 104143 392539 729001 1353859 5103007 9477013 64176121 66339091 449232847 834289573 3144629929 5840027011 10845764449 40880189077 75920351143 531442458001