56162220 has 48 divisors (see below), whose sum is σ = 166507488. Its totient is φ = 14095360.

The previous prime is 56162209. The next prime is 56162221. The reversal of 56162220 is 2226165.

It is not an unprimeable number, because it can be changed into a prime (56162221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26511 + ... + 28550.

It is an arithmetic number, because the mean of its divisors is an integer number (3468906).

Almost surely, 2^56162220 is an apocalyptic number.

It is an amenable number.

56162220 is an abundant number, since it is smaller than the sum of its proper divisors (110345268).

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

56162220 is a wasteful number, since it uses less digits than its factorization.

56162220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55090 (or 55088 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 56162220 is about 7494.1457151566. The cubic root of 56162220 is about 382.9553038621.

Adding to 56162220 its reverse (2226165), we get a palindrome (58388385).

The spelling of 56162220 in words is "fifty-six million, one hundred sixty-two thousand, two hundred twenty".