2557995 has 32 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 1203840.

The previous prime is 2557967. The next prime is 2557999. The reversal of 2557995 is 5997552.

It is not a de Polignac number, because 2557995 - 2⁵ = 2557963 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2557999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5896 + ... + 6314.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^2557995 is an apocalyptic number.

2557995 is a deficient number, since it is larger than the sum of its proper divisors (2038485).

2557995 is a wasteful number, since it uses less digits than its factorization.

2557995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 141750, while the sum is 42.

The square root of 2557995 is about 1599.3733147705. The cubic root of 2557995 is about 136.7623528463.

The spelling of 2557995 in words is "two million, five hundred fifty-seven thousand, nine hundred ninety-five".