5251638 has 32 divisors (see below), whose sum is σ = 12637440. Its totient is φ = 1421280.

The previous prime is 5251627. The next prime is 5251663. The reversal of 5251638 is 8361525.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2493 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (394920).

Almost surely, 2^5251638 is an apocalyptic number.

5251638 is an abundant number, since it is smaller than the sum of its proper divisors (7385802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5251638 is a wasteful number, since it uses less digits than its factorization.

5251638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612.

The product of its digits is 7200, while the sum is 30.

The square root of 5251638 is about 2291.6452605061. The cubic root of 5251638 is about 173.8194057034.

The spelling of 5251638 in words is "five million, two hundred fifty-one thousand, six hundred thirty-eight".