51274560 has 56 divisors (see below), whose sum is σ = 162799776. Its totient is φ = 13672960.

The previous prime is 51274547. The next prime is 51274571. The reversal of 51274560 is 6547215.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 25746 + ... + 27665.

Almost surely, 2^51274560 is an apocalyptic number.

It is an amenable number.

51274560 is an abundant number, since it is smaller than the sum of its proper divisors (111525216).

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

51274560 is a wasteful number, since it uses less digits than its factorization.

51274560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53431 (or 53421 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 51274560 is about 7160.6256709871. The cubic root of 51274560 is about 371.5072676306.

The spelling of 51274560 in words is "fifty-one million, two hundred seventy-four thousand, five hundred sixty".