51513854 has 16 divisors (see below), whose sum is σ = 88495200. Its totient is φ = 22030944.

The previous prime is 51513841. The next prime is 51513857. The reversal of 51513854 is 45831515.

51513854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51513854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3512 + ... + 10740.

It is an arithmetic number, because the mean of its divisors is an integer number (5530950).

Almost surely, 2^51513854 is an apocalyptic number.

51513854 is a deficient number, since it is larger than the sum of its proper divisors (36981346).

51513854 is a wasteful number, since it uses less digits than its factorization.

51513854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747.

The product of its digits is 12000, while the sum is 32.

The square root of 51513854 is about 7177.3152362147. The cubic root of 51513854 is about 372.0843018177.

The spelling of 51513854 in words is "fifty-one million, five hundred thirteen thousand, eight hundred fifty-four".