51518692 has 12 divisors (see below), whose sum is σ = 90223420. Its totient is φ = 25740576.

The previous prime is 51518659. The next prime is 51518699. The reversal of 51518692 is 29681515.

It can be written as a sum of positive squares in 2 ways, for example, as 26378496 + 25140196 = 5136^2 + 5014^2 .

It is not an unprimeable number, because it can be changed into a prime (51518699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818 + ... + 10534.

Almost surely, 2^51518692 is an apocalyptic number.

It is an amenable number.

51518692 is a deficient number, since it is larger than the sum of its proper divisors (38704728).

51518692 is a wasteful number, since it uses less digits than its factorization.

51518692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9390 (or 9388 counting only the distinct ones).

The product of its digits is 21600, while the sum is 37.

The square root of 51518692 is about 7177.6522624045. The cubic root of 51518692 is about 372.0959497361.

The spelling of 51518692 in words is "fifty-one million, five hundred eighteen thousand, six hundred ninety-two".