51964160 has 36 divisors (see below), whose sum is σ = 124473468. Its totient is φ = 20785152.

The previous prime is 51964147. The next prime is 51964193. The reversal of 51964160 is 6146915.

It can be written as a sum of positive squares in 2 ways, for example, as 38539264 + 13424896 = 6208^2 + 3664^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 19019 + ... + 21578.

Almost surely, 2^51964160 is an apocalyptic number.

It is an amenable number.

51964160 is an abundant number, since it is smaller than the sum of its proper divisors (72509308).

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

51964160 is an equidigital number, since it uses as much as digits as its factorization.

51964160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40618 (or 40604 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 51964160 is about 7208.6170657068. The cubic root of 51964160 is about 373.1653439220.

The spelling of 51964160 in words is "fifty-one million, nine hundred sixty-four thousand, one hundred sixty".