51664514 has 16 divisors (see below), whose sum is σ = 84663360. Its totient is φ = 23450160.

The previous prime is 51664451. The next prime is 51664517. The reversal of 51664514 is 41546615.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51664517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20432 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (5291460).

Almost surely, 2^51664514 is an apocalyptic number.

51664514 is a deficient number, since it is larger than the sum of its proper divisors (32998846).

51664514 is a wasteful number, since it uses less digits than its factorization.

51664514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385.

The product of its digits is 14400, while the sum is 32.

The square root of 51664514 is about 7187.8031414334. The cubic root of 51664514 is about 372.4466875642.

The spelling of 51664514 in words is "fifty-one million, six hundred sixty-four thousand, five hundred fourteen".