56777424 has 80 divisors (see below), whose sum is σ = 161132544. Its totient is φ = 17084800.

The previous prime is 56777407. The next prime is 56777437. The reversal of 56777424 is 42477765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100567 + ... + 101129.

Almost surely, 2^56777424 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 56777424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80566272).

56777424 is an abundant number, since it is smaller than the sum of its proper divisors (104355120).

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

56777424 is a wasteful number, since it uses less digits than its factorization.

56777424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 770 counting only the distinct ones).

The product of its digits is 329280, while the sum is 42.

The square root of 56777424 is about 7535.0795616238. The cubic root of 56777424 is about 384.3485333882.

The spelling of 56777424 in words is "fifty-six million, seven hundred seventy-seven thousand, four hundred twenty-four".