Search a number
-
+
2397571225 = 527213992
BaseRepresentation
bin1000111011101000…
…0000100010011001
320012002110020102021
42032322000202121
514402234234400
61033524134441
7113262006400
oct21672004231
96162406367
102397571225
111020403825
1256ab37421
132c29482ca
1418a5ca637
15e074671a
hex8ee80899

2397571225 has 27 divisors (see below), whose sum is σ = 3460847967. Its totient is φ = 1642873680.

The previous prime is 2397571223. The next prime is 2397571261. The reversal of 2397571225 is 5221757932.

The square root of 2397571225 is 48965.

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., 863125641 + 1534445584 = 29379^2 + 39172^2 .

It is not a de Polignac number, because 2397571225 - 21 = 2397571223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2397571223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1713076 + ... + 1714474.

Almost surely, 22397571225 is an apocalyptic number.

2397571225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2397571225 is the 48965-th square number.

2397571225 is the 24483-rd centered octagonal number.

It is an amenable number.

2397571225 is a deficient number, since it is larger than the sum of its proper divisors (1063276742).

2397571225 is an frugal number, since it uses more digits than its factorization.

2397571225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 1411 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The cubic root of 2397571225 is about 1338.4141082790.

The spelling of 2397571225 in words is "two billion, three hundred ninety-seven million, five hundred seventy-one thousand, two hundred twenty-five".

Divisors: 1 5 7 25 35 49 175 245 1225 1399 6995 9793 34975 48965 68551 244825 342755 1713775 1957201 9786005 13700407 48930025 68502035 95902849 342510175 479514245 2397571225