253057957 has 2 divisors, whose sum is σ = 253057958. Its totient is φ = 253057956.

The previous prime is 253057907. The next prime is 253057969. The reversal of 253057957 is 759750352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253000836 + 57121 = 15906^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 253057957 - 2¹⁵ = 253025189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253057907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126528978 + 126528979.

It is an arithmetic number, because the mean of its divisors is an integer number (126528979).

Almost surely, 2^253057957 is an apocalyptic number.

It is an amenable number.

253057957 is a deficient number, since it is larger than the sum of its proper divisors (1).

253057957 is an equidigital number, since it uses as much as digits as its factorization.

253057957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330750, while the sum is 43.

The square root of 253057957 is about 15907.7954789468. The cubic root of 253057957 is about 632.5186458907.

The spelling of 253057957 in words is "two hundred fifty-three million, fifty-seven thousand, nine hundred fifty-seven".