51641560 has 32 divisors (see below), whose sum is σ = 116426160. Its totient is φ = 20615296.

The previous prime is 51641549. The next prime is 51641621. The reversal of 51641560 is 6514615.

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, 26127 + ... + 28033.

Almost surely, 2^51641560 is an apocalyptic number.

It is an amenable number.

51641560 is an abundant number, since it is smaller than the sum of its proper divisors (64784600).

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

51641560 is a wasteful number, since it uses less digits than its factorization.

51641560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595 (or 2591 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51641560 is about 7186.2062313852. The cubic root of 51641560 is about 372.3915213452.

It can be divided in two parts, 5164 and 1560, that added together give a square (6724 = 82²).

The spelling of 51641560 in words is "fifty-one million, six hundred forty-one thousand, five hundred sixty".