252617657 has 2 divisors, whose sum is σ = 252617658. Its totient is φ = 252617656.

The previous prime is 252617641. The next prime is 252617669. The reversal of 252617657 is 756716252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134003776 + 118613881 = 11576^2 + 10891^2 .

It is a cyclic number.

It is not a de Polignac number, because 252617657 - 2⁴ = 252617641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252617857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126308828 + 126308829.

It is an arithmetic number, because the mean of its divisors is an integer number (126308829).

Almost surely, 2^252617657 is an apocalyptic number.

It is an amenable number.

252617657 is a deficient number, since it is larger than the sum of its proper divisors (1).

252617657 is an equidigital number, since it uses as much as digits as its factorization.

252617657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 252617657 is about 15893.9503270899. The cubic root of 252617657 is about 632.1515894785.

The spelling of 252617657 in words is "two hundred fifty-two million, six hundred seventeen thousand, six hundred fifty-seven".