56881776 has 160 divisors (see below), whose sum is σ = 178782208. Its totient is φ = 15240960.

The previous prime is 56881771. The next prime is 56881777. The reversal of 56881776 is 67718865.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56881771) 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, 447825 + ... + 447951.

Almost surely, 2^56881776 is an apocalyptic number.

56881776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56881776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89391104).

56881776 is an abundant number, since it is smaller than the sum of its proper divisors (121900432).

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

56881776 is a wasteful number, since it uses less digits than its factorization.

56881776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 56881776 is about 7542.0007955449. Note that the first 3 decimals coincide. The cubic root of 56881776 is about 384.5838557457.

The spelling of 56881776 in words is "fifty-six million, eight hundred eighty-one thousand, seven hundred seventy-six".