252890357 has 4 divisors (see below), whose sum is σ = 253086636. Its totient is φ = 252694080.

The previous prime is 252890347. The next prime is 252890369. The reversal of 252890357 is 753098252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171060241 + 81830116 = 13079^2 + 9046^2 .

It is a cyclic number.

It is not a de Polignac number, because 252890357 - 2¹⁰ = 252889333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252890347) 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, 96194 + ... + 98787.

It is an arithmetic number, because the mean of its divisors is an integer number (63271659).

Almost surely, 2^252890357 is an apocalyptic number.

It is an amenable number.

252890357 is a deficient number, since it is larger than the sum of its proper divisors (196279).

252890357 is a wasteful number, since it uses less digits than its factorization.

252890357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196278.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 252890357 is about 15902.5267489163. The cubic root of 252890357 is about 632.3789762561.

The spelling of 252890357 in words is "two hundred fifty-two million, eight hundred ninety thousand, three hundred fifty-seven".