2557975 has 24 divisors (see below), whose sum is σ = 3714048. Its totient is φ = 1711200.

The previous prime is 2557967. The next prime is 2557999. The reversal of 2557975 is 5797552.

It is not a de Polignac number, because 2557975 - 2³ = 2557967 is a prime.

It is a super-2 number, since 2×2557975² = 13086472201250, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (110250) is a multiple of the sum of its prime factors (375).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8070 + ... + 8380.

It is an arithmetic number, because the mean of its divisors is an integer number (154752).

2^2557975 is an apocalyptic number.

2557975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2557975 is a deficient number, since it is larger than the sum of its proper divisors (1156073).

2557975 is a wasteful number, since it uses less digits than its factorization.

2557975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 370 counting only the distinct ones).

The product of its digits is 110250, while the sum is 40.

The square root of 2557975 is about 1599.3670623093. The cubic root of 2557975 is about 136.7619964142.

The spelling of 2557975 in words is "two million, five hundred fifty-seven thousand, nine hundred seventy-five".