51057860 has 24 divisors (see below), whose sum is σ = 122539200. Its totient is φ = 17505504.

The previous prime is 51057841. The next prime is 51057901. The reversal of 51057860 is 6875015.

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, 182210 + ... + 182489.

It is an arithmetic number, because the mean of its divisors is an integer number (5105800).

Almost surely, 2^51057860 is an apocalyptic number.

It is an amenable number.

51057860 is an abundant number, since it is smaller than the sum of its proper divisors (71481340).

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

51057860 is a wasteful number, since it uses less digits than its factorization.

51057860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364715 (or 364713 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 51057860 is about 7145.4782904995. The cubic root of 51057860 is about 370.9831655892.

The spelling of 51057860 in words is "fifty-one million, fifty-seven thousand, eight hundred sixty".