2551492 has 6 divisors (see below), whose sum is σ = 4465118. Its totient is φ = 1275744.

The previous prime is 2551481. The next prime is 2551499. The reversal of 2551492 is 2941552.

It can be written as a sum of positive squares in only one way, i.e., 2509056 + 42436 = 1584^2 + 206^2 .

It is a super-2 number, since 2×2551492² = 13020222852128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2551492.

It is not an unprimeable number, because it can be changed into a prime (2551499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318933 + ... + 318940.

2^2551492 is an apocalyptic number.

It is an amenable number.

2551492 is a deficient number, since it is larger than the sum of its proper divisors (1913626).

2551492 is a wasteful number, since it uses less digits than its factorization.

2551492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637877 (or 637875 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 2551492 is about 1597.3390372742. The cubic root of 2551492 is about 136.6463609200.

The spelling of 2551492 in words is "two million, five hundred fifty-one thousand, four hundred ninety-two".