56671992 has 96 divisors (see below), whose sum is σ = 166682880. Its totient is φ = 17291520.

The previous prime is 56671981. The next prime is 56671997. The reversal of 56671992 is 29917665.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56671997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178618 + ... + 178934.

It is an arithmetic number, because the mean of its divisors is an integer number (1736280).

Almost surely, 2^56671992 is an apocalyptic number.

56671992 is a gapful number since it is divisible by the number (52) 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 56671992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83341440).

56671992 is an abundant number, since it is smaller than the sum of its proper divisors (110010888).

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

56671992 is a wasteful number, since it uses less digits than its factorization.

56671992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 526 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 56671992 is about 7528.0802333663. The cubic root of 56671992 is about 384.1104825324.

The spelling of 56671992 in words is "fifty-six million, six hundred seventy-one thousand, nine hundred ninety-two".