51634660 has 48 divisors (see below), whose sum is σ = 135192960. Its totient is φ = 16093440.

The previous prime is 51634657. The next prime is 51634699. The reversal of 51634660 is 6643615.

51634660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51634660² = 5332276226631200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15225 + ... + 18304.

It is an arithmetic number, because the mean of its divisors is an integer number (2816520).

Almost surely, 2^51634660 is an apocalyptic number.

It is an amenable number.

51634660 is an abundant number, since it is smaller than the sum of its proper divisors (83558300).

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

51634660 is a wasteful number, since it uses less digits than its factorization.

51634660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33556 (or 33554 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 51634660 is about 7185.7261289309. The cubic root of 51634660 is about 372.3749351180.

The spelling of 51634660 in words is "fifty-one million, six hundred thirty-four thousand, six hundred sixty".