2551504 has 10 divisors (see below), whose sum is σ = 4943570. Its totient is φ = 1275744.

The previous prime is 2551501. The next prime is 2551511. The reversal of 2551504 is 4051552.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 419904 = 1460^2 + 648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79719 + ... + 79750.

It is an arithmetic number, because the mean of its divisors is an integer number (494357).

2^2551504 is an apocalyptic number.

It is an amenable number.

2551504 is a deficient number, since it is larger than the sum of its proper divisors (2392066).

2551504 is a wasteful number, since it uses less digits than its factorization.

2551504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159477 (or 159471 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2551504 is about 1597.3427935168. The cubic root of 2551504 is about 136.6465751415.

It can be divided in two parts, 25 and 51504, that added together give a square (51529 = 227²).

The spelling of 2551504 in words is "two million, five hundred fifty-one thousand, five hundred four".