51276720 has 80 divisors (see below), whose sum is σ = 173417472. Its totient is φ = 12430080.

The previous prime is 51276713. The next prime is 51276749. The reversal of 51276720 is 2767215.

51276720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7072 + ... + 12351.

Almost surely, 2^51276720 is an apocalyptic number.

It is an amenable number.

51276720 is an abundant number, since it is smaller than the sum of its proper divisors (122140752).

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

51276720 is a wasteful number, since it uses less digits than its factorization.

51276720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450 (or 19444 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 51276720 is about 7160.7764942079. The cubic root of 51276720 is about 371.5124842814.

The spelling of 51276720 in words is "fifty-one million, two hundred seventy-six thousand, seven hundred twenty".