2557172 has 12 divisors (see below), whose sum is σ = 4710720. Its totient is φ = 1211256.

The previous prime is 2557171. The next prime is 2557199. The reversal of 2557172 is 2717552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16748 + ... + 16899.

It is an arithmetic number, because the mean of its divisors is an integer number (392560).

2^2557172 is an apocalyptic number.

It is an amenable number.

2557172 is a deficient number, since it is larger than the sum of its proper divisors (2153548).

2557172 is a wasteful number, since it uses less digits than its factorization.

2557172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33670 (or 33668 counting only the distinct ones).

The product of its digits is 4900, while the sum is 29.

The square root of 2557172 is about 1599.1160057982. The cubic root of 2557172 is about 136.7476841325.

The spelling of 2557172 in words is "two million, five hundred fifty-seven thousand, one hundred seventy-two".