56131704 has 120 divisors (see below), whose sum is σ = 164409960. Its totient is φ = 17889984.

The previous prime is 56131703. The next prime is 56131709. The reversal of 56131704 is 40713165.

56131704 is a `hidden beast` number, since 561 + 31 + 70 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56131703) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 544917 + ... + 545019.

It is an arithmetic number, because the mean of its divisors is an integer number (1370083).

Almost surely, 2^56131704 is an apocalyptic number.

56131704 is a gapful number since it is divisible by the number (54) 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 56131704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82204980).

56131704 is an abundant number, since it is smaller than the sum of its proper divisors (108278256).

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

56131704 is a wasteful number, since it uses less digits than its factorization.

56131704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 56131704 is about 7492.1094492806. The cubic root of 56131704 is about 382.8859311219.

Adding to 56131704 its reverse (40713165), we get a palindrome (96844869).

The spelling of 56131704 in words is "fifty-six million, one hundred thirty-one thousand, seven hundred four".