Search a number
-
+
252131741 = 411161331
BaseRepresentation
bin11110000011100…
…11100110011101
3122120102121201122
433001303212131
51004021203431
641004020325
76151040651
oct1701634635
9576377648
10252131741
1111a35a344
12705316a5
134030aaa4
14256b2a61
1517205a7b
hexf07399d

252131741 has 4 divisors (see below), whose sum is σ = 252197184. Its totient is φ = 252066300.

The previous prime is 252131717. The next prime is 252131753. The reversal of 252131741 is 147131252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252131741 - 210 = 252130717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252131741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252131701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26555 + ... + 34776.

It is an arithmetic number, because the mean of its divisors is an integer number (63049296).

Almost surely, 2252131741 is an apocalyptic number.

It is an amenable number.

252131741 is a deficient number, since it is larger than the sum of its proper divisors (65443).

252131741 is an equidigital number, since it uses as much as digits as its factorization.

252131741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65442.

The product of its digits is 1680, while the sum is 26.

The square root of 252131741 is about 15878.6567756848. The cubic root of 252131741 is about 631.7460098404.

Adding to 252131741 its reverse (147131252), we get a palindrome (399262993).

The spelling of 252131741 in words is "two hundred fifty-two million, one hundred thirty-one thousand, seven hundred forty-one".

Divisors: 1 4111 61331 252131741