56015040 has 224 divisors, whose sum is σ = 194584320. Its totient is φ = 13602816.

The previous prime is 56015009. The next prime is 56015041. The reversal of 56015040 is 4051065.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 56014998 and 56015016.

It is not an unprimeable number, because it can be changed into a prime (56015041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674839 + ... + 674921.

It is an arithmetic number, because the mean of its divisors is an integer number (868680).

Almost surely, 2^56015040 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 56015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97292160).

56015040 is an abundant number, since it is smaller than the sum of its proper divisors (138569280).

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

56015040 is a wasteful number, since it uses less digits than its factorization.

56015040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 56015040 is about 7484.3196083545. The cubic root of 56015040 is about 382.6204840661.

The spelling of 56015040 in words is "fifty-six million, fifteen thousand, forty".