51883920 has 120 divisors (see below), whose sum is σ = 190112832. Its totient is φ = 12576000.

The previous prime is 51883859. The next prime is 51883933. The reversal of 51883920 is 2938815.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4645 + ... + 11195.

Almost surely, 2^51883920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51883920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95056416).

51883920 is an abundant number, since it is smaller than the sum of its proper divisors (138228912).

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

51883920 is a wasteful number, since it uses less digits than its factorization.

51883920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581 (or 6572 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 51883920 is about 7203.0493542666. The cubic root of 51883920 is about 372.9731716479.

The spelling of 51883920 in words is "fifty-one million, eight hundred eighty-three thousand, nine hundred twenty".