51280692 has 12 divisors (see below), whose sum is σ = 119654976. Its totient is φ = 17093560.

The previous prime is 51280681. The next prime is 51280693. The reversal of 51280692 is 29608215.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51280693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136684 + ... + 2136707.

It is an arithmetic number, because the mean of its divisors is an integer number (9971248).

Almost surely, 2^51280692 is an apocalyptic number.

It is an amenable number.

51280692 is an abundant number, since it is smaller than the sum of its proper divisors (68374284).

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

51280692 is a wasteful number, since it uses less digits than its factorization.

51280692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273398 (or 4273396 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 51280692 is about 7161.0538330612. The cubic root of 51280692 is about 371.5220767403.

The spelling of 51280692 in words is "fifty-one million, two hundred eighty thousand, six hundred ninety-two".