51601560 has 32 divisors (see below), whose sum is σ = 154805040. Its totient is φ = 13760384.

The previous prime is 51601559. The next prime is 51601567. The reversal of 51601560 is 6510615.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51601560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601567) 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, 214887 + ... + 215126.

Almost surely, 2^51601560 is an apocalyptic number.

It is an amenable number.

51601560 is an abundant number, since it is smaller than the sum of its proper divisors (103203480).

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

51601560 is a wasteful number, since it uses less digits than its factorization.

51601560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430027 (or 430023 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51601560 is about 7183.4225825855. The cubic root of 51601560 is about 372.2953487507.

The spelling of 51601560 in words is "fifty-one million, six hundred one thousand, five hundred sixty".