56519988 has 48 divisors (see below), whose sum is σ = 152127360. Its totient is φ = 15997824.

The previous prime is 56519987. The next prime is 56519989. The reversal of 56519988 is 88991565.

It is an interprime number because it is at equal distance from previous prime (56519987) and next prime (56519989).

It is a self number, because there is not a number n which added to its sum of digits gives 56519988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56519987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6070 + ... + 12242.

It is an arithmetic number, because the mean of its divisors is an integer number (3169320).

Almost surely, 2^56519988 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 56519988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76063680).

56519988 is an abundant number, since it is smaller than the sum of its proper divisors (95607372).

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

56519988 is a wasteful number, since it uses less digits than its factorization.

56519988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6294 counting only the distinct ones).

The product of its digits is 777600, while the sum is 51.

The square root of 56519988 is about 7517.9776535981. The cubic root of 56519988 is about 383.7667583142.

The spelling of 56519988 in words is "fifty-six million, five hundred nineteen thousand, nine hundred eighty-eight".