51494120 has 16 divisors (see below), whose sum is σ = 115861860. Its totient is φ = 20597632.

The previous prime is 51494119. The next prime is 51494167. The reversal of 51494120 is 2149415.

51494120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48246916 + 3247204 = 6946^2 + 1802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51494120.

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 3 ways as a sum of consecutive naturals, for example, 643637 + ... + 643716.

Almost surely, 2^51494120 is an apocalyptic number.

It is an amenable number.

51494120 is an abundant number, since it is smaller than the sum of its proper divisors (64367740).

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

51494120 is a wasteful number, since it uses less digits than its factorization.

51494120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287364 (or 1287360 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 51494120 is about 7175.9403564968. The cubic root of 51494120 is about 372.0367828892.

The spelling of 51494120 in words is "fifty-one million, four hundred ninety-four thousand, one hundred twenty".