2501957 has 2 divisors, whose sum is σ = 2501958. Its totient is φ = 2501956.

The previous prime is 2501953. The next prime is 2501959. The reversal of 2501957 is 7591052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 649636 = 1361^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501957 - 2² = 2501953 is a prime.

Together with 2501959, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2501953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250978 + 1250979.

It is an arithmetic number, because the mean of its divisors is an integer number (1250979).

2^2501957 is an apocalyptic number.

It is an amenable number.

2501957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501957 is an equidigital number, since it uses as much as digits as its factorization.

2501957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 2501957 is about 1581.7575667592. The cubic root of 2501957 is about 135.7562856949.

The spelling of 2501957 in words is "two million, five hundred one thousand, nine hundred fifty-seven".