51305976 has 48 divisors (see below), whose sum is σ = 142716600. Its totient is φ = 16638912.

The previous prime is 51305963. The next prime is 51305977. The reversal of 51305976 is 67950315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51305976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51305977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6966 + ... + 12293.

Almost surely, 2^51305976 is an apocalyptic number.

It is an amenable number.

51305976 is an abundant number, since it is smaller than the sum of its proper divisors (91410624).

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

51305976 is a wasteful number, since it uses less digits than its factorization.

51305976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19308 (or 19301 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 51305976 is about 7162.8189981320. The cubic root of 51305976 is about 371.5831264935.

The spelling of 51305976 in words is "fifty-one million, three hundred five thousand, nine hundred seventy-six".