51513954 has 16 divisors (see below), whose sum is σ = 103258848. Its totient is φ = 17132832.

The previous prime is 51513949. The next prime is 51513977. The reversal of 51513954 is 45931515.

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, 6652 + ... + 12135.

It is an arithmetic number, because the mean of its divisors is an integer number (6453678).

Almost surely, 2^51513954 is an apocalyptic number.

51513954 is an abundant number, since it is smaller than the sum of its proper divisors (51744894).

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

51513954 is a wasteful number, since it uses less digits than its factorization.

51513954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19249.

The product of its digits is 13500, while the sum is 33.

The square root of 51513954 is about 7177.3222026045. The cubic root of 51513954 is about 372.0845425840.

The spelling of 51513954 in words is "fifty-one million, five hundred thirteen thousand, nine hundred fifty-four".