51059520 has 84 divisors (see below), whose sum is σ = 175633380. Its totient is φ = 13615104.

The previous prime is 51059513. The next prime is 51059521. The reversal of 51059520 is 2595015.

51059520 is a `hidden beast` number, since 51 + 0 + 595 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26378496 + 24681024 = 5136^2 + 4968^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51059521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5985 + ... + 11744.

Almost surely, 2^51059520 is an apocalyptic number.

It is an amenable number.

51059520 is an abundant number, since it is smaller than the sum of its proper divisors (124573860).

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

51059520 is a wasteful number, since it uses less digits than its factorization.

51059520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17752 (or 17739 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 51059520 is about 7145.5944469302. The cubic root of 51059520 is about 370.9871860304.

The spelling of 51059520 in words is "fifty-one million, fifty-nine thousand, five hundred twenty".