51628624 has 20 divisors (see below), whose sum is σ = 105295840. Its totient is φ = 24455520.

The previous prime is 51628601. The next prime is 51628627. The reversal of 51628624 is 42682615.

It is a super-2 number, since 2×51628624² = 5331029632266752, 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 51628624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51628627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84612 + ... + 85219.

It is an arithmetic number, because the mean of its divisors is an integer number (5264792).

Almost surely, 2^51628624 is an apocalyptic number.

It is an amenable number.

51628624 is an abundant number, since it is smaller than the sum of its proper divisors (53667216).

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

51628624 is a wasteful number, since it uses less digits than its factorization.

51628624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169858 (or 169852 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 51628624 is about 7185.3061173481. The cubic root of 51628624 is about 372.3604245631.

The spelling of 51628624 in words is "fifty-one million, six hundred twenty-eight thousand, six hundred twenty-four".