51964980 has 24 divisors (see below), whose sum is σ = 145502112. Its totient is φ = 13857312.

The previous prime is 51964967. The next prime is 51964993. The reversal of 51964980 is 8946915.

It is an interprime number because it is at equal distance from previous prime (51964967) and next prime (51964993).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432982 + ... + 433101.

It is an arithmetic number, because the mean of its divisors is an integer number (6062588).

Almost surely, 2^51964980 is an apocalyptic number.

It is an amenable number.

51964980 is an abundant number, since it is smaller than the sum of its proper divisors (93537132).

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

51964980 is a wasteful number, since it uses less digits than its factorization.

51964980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866095 (or 866093 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 51964980 is about 7208.6739418564. The cubic root of 51964980 is about 373.1673067747.

The spelling of 51964980 in words is "fifty-one million, nine hundred sixty-four thousand, nine hundred eighty".