51560520 has 192 divisors, whose sum is σ = 175815360. Its totient is φ = 12080640.

The previous prime is 51560519. The next prime is 51560539. The reversal of 51560520 is 2506515.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 769527 + ... + 769593.

It is an arithmetic number, because the mean of its divisors is an integer number (915705).

Almost surely, 2^51560520 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 51560520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87907680).

51560520 is an abundant number, since it is smaller than the sum of its proper divisors (124254840).

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

51560520 is a wasteful number, since it uses less digits than its factorization.

51560520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 51560520 is about 7180.5654373454. The cubic root of 51560520 is about 372.1966239997.

The spelling of 51560520 in words is "fifty-one million, five hundred sixty thousand, five hundred twenty".