56578548 has 48 divisors (see below), whose sum is σ = 143675840. Its totient is φ = 17224704.

The previous prime is 56578547. The next prime is 56578549. The reversal of 56578548 is 84587565.

It is an interprime number because it is at equal distance from previous prime (56578547) and next prime (56578549).

It is a super-2 number, since 2×56578548² = 6402264187576608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56578497 and 56578506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56578541) 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, 13263 + ... + 17001.

Almost surely, 2^56578548 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 56578548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71837920).

56578548 is an abundant number, since it is smaller than the sum of its proper divisors (87097292).

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

56578548 is a wasteful number, since it uses less digits than its factorization.

56578548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3854 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 48.

The square root of 56578548 is about 7521.8713097207. The cubic root of 56578548 is about 383.8992519984.

The spelling of 56578548 in words is "fifty-six million, five hundred seventy-eight thousand, five hundred forty-eight".