252556137 has 20 divisors (see below), whose sum is σ = 380261376. Its totient is φ = 167038200.

The previous prime is 252556081. The next prime is 252556147. The reversal of 252556137 is 731655252.

It is not a de Polignac number, because 252556137 - 2⁸ = 252555881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252556147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1989 + ... + 22562.

Almost surely, 2^252556137 is an apocalyptic number.

252556137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

252556137 is a deficient number, since it is larger than the sum of its proper divisors (127705239).

252556137 is a wasteful number, since it uses less digits than its factorization.

252556137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24690 (or 24681 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 252556137 is about 15892.0148816945. The cubic root of 252556137 is about 632.1002693351.

The spelling of 252556137 in words is "two hundred fifty-two million, five hundred fifty-six thousand, one hundred thirty-seven".