51214664 has 16 divisors (see below), whose sum is σ = 96385920. Its totient is φ = 25511760.

The previous prime is 51214663. The next prime is 51214679. The reversal of 51214664 is 46641215.

It is not an unprimeable number, because it can be changed into a prime (51214663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9644 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (6024120).

Almost surely, 2^51214664 is an apocalyptic number.

It is an amenable number.

51214664 is a deficient number, since it is larger than the sum of its proper divisors (45171256).

51214664 is a wasteful number, since it uses less digits than its factorization.

51214664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23900 (or 23896 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 51214664 is about 7156.4421327920. The cubic root of 51214664 is about 371.3625534399.

Adding to 51214664 its reverse (46641215), we get a palindrome (97855879).

The spelling of 51214664 in words is "fifty-one million, two hundred fourteen thousand, six hundred sixty-four".