51712980 has 144 divisors (see below), whose sum is σ = 168920640. Its totient is φ = 11770880.

The previous prime is 51712957. The next prime is 51713021. The reversal of 51712980 is 8921715.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123211 + ... + 123629.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^51712980 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 51712980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84460320).

51712980 is an abundant number, since it is smaller than the sum of its proper divisors (117207660).

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

51712980 is a wasteful number, since it uses less digits than its factorization.

51712980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 51712980 is about 7191.1737567660. The cubic root of 51712980 is about 372.5631140899.

The spelling of 51712980 in words is "fifty-one million, seven hundred twelve thousand, nine hundred eighty".