2555957 has 2 divisors, whose sum is σ = 2555958. Its totient is φ = 2555956.

The previous prime is 2555951. The next prime is 2555989. The reversal of 2555957 is 7595552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 579121 = 1406^2 + 761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555957 - 2⁶ = 2555893 is a prime.

It is a Chen prime.

It is equal to p₁₈₆₈₆₉ and since 2555957 and 186869 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2555957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277978 + 1277979.

It is an arithmetic number, because the mean of its divisors is an integer number (1277979).

2^2555957 is an apocalyptic number.

It is an amenable number.

2555957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555957 is an equidigital number, since it uses as much as digits as its factorization.

2555957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 38.

The square root of 2555957 is about 1598.7360632700. The cubic root of 2555957 is about 136.7260228654.

The spelling of 2555957 in words is "two million, five hundred fifty-five thousand, nine hundred fifty-seven".