56316220 has 24 divisors (see below), whose sum is σ = 121461984. Its totient is φ = 21917376.

The previous prime is 56316137. The next prime is 56316229. The reversal of 56316220 is 2261365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56316229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37312 + ... + 38791.

It is an arithmetic number, because the mean of its divisors is an integer number (5060916).

Almost surely, 2^56316220 is an apocalyptic number.

It is an amenable number.

56316220 is an abundant number, since it is smaller than the sum of its proper divisors (65145764).

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

56316220 is a wasteful number, since it uses less digits than its factorization.

56316220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76149 (or 76147 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56316220 is about 7504.4133681454. The cubic root of 56316220 is about 383.3050128206.

Adding to 56316220 its reverse (2261365), we get a palindrome (58577585).

The spelling of 56316220 in words is "fifty-six million, three hundred sixteen thousand, two hundred twenty".