51513044 has 12 divisors (see below), whose sum is σ = 98343168. Its totient is φ = 23415000.

The previous prime is 51513029. The next prime is 51513061. The reversal of 51513044 is 44031515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585332 + ... + 585419.

It is an arithmetic number, because the mean of its divisors is an integer number (8195264).

Almost surely, 2^51513044 is an apocalyptic number.

It is an amenable number.

51513044 is a deficient number, since it is larger than the sum of its proper divisors (46830124).

51513044 is a wasteful number, since it uses less digits than its factorization.

51513044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170766 (or 1170764 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51513044 is about 7177.2588082080. The cubic root of 51513044 is about 372.0823515989.

Adding to 51513044 its reverse (44031515), we get a palindrome (95544559).

The spelling of 51513044 in words is "fifty-one million, five hundred thirteen thousand, forty-four".