51356460 has 48 divisors (see below), whose sum is σ = 148442112. Its totient is φ = 13252800.

The previous prime is 51356453. The next prime is 51356479. The reversal of 51356460 is 6465315.

51356460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11946 + ... + 15665.

It is an arithmetic number, because the mean of its divisors is an integer number (3092544).

Almost surely, 2^51356460 is an apocalyptic number.

It is an amenable number.

51356460 is an abundant number, since it is smaller than the sum of its proper divisors (97085652).

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

51356460 is a wasteful number, since it uses less digits than its factorization.

51356460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27654 (or 27652 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51356460 is about 7166.3421631959. The cubic root of 51356460 is about 371.7049631979.

The spelling of 51356460 in words is "fifty-one million, three hundred fifty-six thousand, four hundred sixty".