252994657 has 4 divisors (see below), whose sum is σ = 253026496. Its totient is φ = 252962820.

The previous prime is 252994649. The next prime is 252994661. The reversal of 252994657 is 756499252.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 252994657 - 2³ = 252994649 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 252994657.

It is not an unprimeable number, because it can be changed into a prime (252994607) 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, 6988 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (63256624).

Almost surely, 2^252994657 is an apocalyptic number.

It is an amenable number.

252994657 is a deficient number, since it is larger than the sum of its proper divisors (31839).

252994657 is a wasteful number, since it uses less digits than its factorization.

252994657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31838.

The product of its digits is 1360800, while the sum is 49.

The square root of 252994657 is about 15905.8057639341. The cubic root of 252994657 is about 632.4659020191.

The spelling of 252994657 in words is "two hundred fifty-two million, nine hundred ninety-four thousand, six hundred fifty-seven".