252651389 has 16 divisors (see below), whose sum is σ = 272571264. Its totient is φ = 233587200.

The previous prime is 252651383. The next prime is 252651407. The reversal of 252651389 is 983156252.

It is a cyclic number.

It is not a de Polignac number, because 252651389 - 2²⁴ = 235874173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252651383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105374 + ... + 107744.

It is an arithmetic number, because the mean of its divisors is an integer number (17035704).

Almost surely, 2^252651389 is an apocalyptic number.

It is an amenable number.

252651389 is a deficient number, since it is larger than the sum of its proper divisors (19919875).

252651389 is a wasteful number, since it uses less digits than its factorization.

252651389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548.

The product of its digits is 129600, while the sum is 41.

The square root of 252651389 is about 15895.0114501374. The cubic root of 252651389 is about 632.1797252637.

The spelling of 252651389 in words is "two hundred fifty-two million, six hundred fifty-one thousand, three hundred eighty-nine".