56132220 has 24 divisors (see below), whose sum is σ = 157170384. Its totient is φ = 14968576.

The previous prime is 56132203. The next prime is 56132233. The reversal of 56132220 is 2223165.

It is a super-2 number, since 2×56132220² = 6301652244256800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467709 + ... + 467828.

It is an arithmetic number, because the mean of its divisors is an integer number (6548766).

Almost surely, 2^56132220 is an apocalyptic number.

It is an amenable number.

56132220 is an abundant number, since it is smaller than the sum of its proper divisors (101038164).

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

56132220 is a wasteful number, since it uses less digits than its factorization.

56132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935549 (or 935547 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 56132220 is about 7492.1438854309. The cubic root of 56132220 is about 382.8871043658.

Adding to 56132220 its reverse (2223165), we get a palindrome (58355385).

The spelling of 56132220 in words is "fifty-six million, one hundred thirty-two thousand, two hundred twenty".