51464790 has 48 divisors (see below), whose sum is σ = 144104688. Its totient is φ = 12667968.

The previous prime is 51464767. The next prime is 51464813. The reversal of 51464790 is 9746415.

51464790 is a `hidden beast` number, since 5 + 1 + 4 + 647 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (51464767) and next prime (51464813).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20824 + ... + 23163.

It is an arithmetic number, because the mean of its divisors is an integer number (3002181).

Almost surely, 2^51464790 is an apocalyptic number.

51464790 is an abundant number, since it is smaller than the sum of its proper divisors (92639898).

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

51464790 is a wasteful number, since it uses less digits than its factorization.

51464790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44013 (or 44010 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 51464790 is about 7173.8964308108. The cubic root of 51464790 is about 371.9661346209.

The spelling of 51464790 in words is "fifty-one million, four hundred sixty-four thousand, seven hundred ninety".