51913824 has 24 divisors (see below), whose sum is σ = 136274040. Its totient is φ = 17304576.

The previous prime is 51913817. The next prime is 51913837. The reversal of 51913824 is 42831915.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270289 + ... + 270480.

It is an arithmetic number, because the mean of its divisors is an integer number (5678085).

Almost surely, 2^51913824 is an apocalyptic number.

It is an amenable number.

51913824 is an abundant number, since it is smaller than the sum of its proper divisors (84360216).

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

51913824 is a wasteful number, since it uses less digits than its factorization.

51913824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540782 (or 540774 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 51913824 is about 7205.1248427768. The cubic root of 51913824 is about 373.0448139320.

The spelling of 51913824 in words is "fifty-one million, nine hundred thirteen thousand, eight hundred twenty-four".