51464385 has 48 divisors (see below), whose sum is σ = 102585600. Its totient is φ = 23379840.

The previous prime is 51464383. The next prime is 51464401. The reversal of 51464385 is 58346415.

It is a happy number.

51464385 is a `hidden beast` number, since 5 + 1 + 4 + 643 + 8 + 5 = 666.

It is not a de Polignac number, because 51464385 - 2¹ = 51464383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51464383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62275 + ... + 63095.

It is an arithmetic number, because the mean of its divisors is an integer number (2137200).

Almost surely, 2^51464385 is an apocalyptic number.

It is an amenable number.

51464385 is a deficient number, since it is larger than the sum of its proper divisors (51121215).

51464385 is a wasteful number, since it uses less digits than its factorization.

51464385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1035 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 51464385 is about 7173.8682034172. The cubic root of 51464385 is about 371.9651588944.

The spelling of 51464385 in words is "fifty-one million, four hundred sixty-four thousand, three hundred eighty-five".