56491316 has 36 divisors (see below), whose sum is σ = 115587108. Its totient is φ = 24087168.

The previous prime is 56491297. The next prime is 56491319. The reversal of 56491316 is 61319465.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 29658916 = 5180^2 + 5446^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56491319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45050 + ... + 46286.

It is an arithmetic number, because the mean of its divisors is an integer number (3210753).

Almost surely, 2^56491316 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 56491316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57793554).

56491316 is an abundant number, since it is smaller than the sum of its proper divisors (59095792).

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

56491316 is a wasteful number, since it uses less digits than its factorization.

56491316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1479 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 56491316 is about 7516.0705159012. The cubic root of 56491316 is about 383.7018537142.

The spelling of 56491316 in words is "fifty-six million, four hundred ninety-one thousand, three hundred sixteen".