51324778 has 16 divisors (see below), whose sum is σ = 79962624. Its totient is φ = 24680880.

The previous prime is 51324739. The next prime is 51324811. The reversal of 51324778 is 87742315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7876 + ... + 12832.

It is an arithmetic number, because the mean of its divisors is an integer number (4997664).

Almost surely, 2^51324778 is an apocalyptic number.

51324778 is a deficient number, since it is larger than the sum of its proper divisors (28637846).

51324778 is a wasteful number, since it uses less digits than its factorization.

51324778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5157.

The product of its digits is 47040, while the sum is 37.

The square root of 51324778 is about 7164.1313499963. The cubic root of 51324778 is about 371.6285120621.

The spelling of 51324778 in words is "fifty-one million, three hundred twenty-four thousand, seven hundred seventy-eight".