51158560 has 48 divisors (see below), whose sum is σ = 123451776. Its totient is φ = 20025088.

The previous prime is 51158543. The next prime is 51158561. The reversal of 51158560 is 6585115.

It is a super-2 number, since 2×51158560² = 5234396522547200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51158561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119 + ... + 10921.

It is an arithmetic number, because the mean of its divisors is an integer number (2571912).

Almost surely, 2^51158560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51158560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61725888).

51158560 is an abundant number, since it is smaller than the sum of its proper divisors (72293216).

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

51158560 is a wasteful number, since it uses less digits than its factorization.

51158560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 51158560 is about 7152.5212338028. The cubic root of 51158560 is about 371.2268986899.

The spelling of 51158560 in words is "fifty-one million, one hundred fifty-eight thousand, five hundred sixty".