2556874 has 4 divisors (see below), whose sum is σ = 3835314. Its totient is φ = 1278436.

The previous prime is 2556871. The next prime is 2556877. The reversal of 2556874 is 4786552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2556871) and next prime (2556877).

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 351649 = 1485^2 + 593^2 .

It is not an unprimeable number, because it can be changed into a prime (2556871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639217 + ... + 639220.

2^2556874 is an apocalyptic number.

2556874 is a deficient number, since it is larger than the sum of its proper divisors (1278440).

2556874 is a wasteful number, since it uses less digits than its factorization.

2556874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278439.

The product of its digits is 67200, while the sum is 37.

The square root of 2556874 is about 1599.0228266038. The cubic root of 2556874 is about 136.7423719630.

The spelling of 2556874 in words is "two million, five hundred fifty-six thousand, eight hundred seventy-four".