51373692 has 18 divisors (see below), whose sum is σ = 129861368. Its totient is φ = 17124552.

The previous prime is 51373669. The next prime is 51373717. The reversal of 51373692 is 29637315.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1427047 = 51373692 / (5 + 1 + 3 + 7 + 3 + 6 + 9 + 2).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 713488 + ... + 713559.

Almost surely, 2^51373692 is an apocalyptic number.

It is an amenable number.

51373692 is an abundant number, since it is smaller than the sum of its proper divisors (78487676).

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

51373692 is a wasteful number, since it uses less digits than its factorization.

51373692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427057 (or 1427052 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 51373692 is about 7167.5443493570. The cubic root of 51373692 is about 371.7465321564.

The spelling of 51373692 in words is "fifty-one million, three hundred seventy-three thousand, six hundred ninety-two".