56212020 has 36 divisors (see below), whose sum is σ = 170510340. Its totient is φ = 14989824.

The previous prime is 56212019. The next prime is 56212027. The reversal of 56212020 is 2021265.

56212020 is a `hidden beast` number, since 5 + 621 + 20 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18610596 + 37601424 = 4314^2 + 6132^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 56211984 and 56212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56212027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155965 + ... + 156324.

Almost surely, 2^56212020 is an apocalyptic number.

It is an amenable number.

56212020 is an abundant number, since it is smaller than the sum of its proper divisors (114298320).

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

56212020 is a wasteful number, since it uses less digits than its factorization.

56212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312304 (or 312299 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 56212020 is about 7497.4675724540. The cubic root of 56212020 is about 383.0684614260.

Adding to 56212020 its reverse (2021265), we get a palindrome (58233285).

The spelling of 56212020 in words is "fifty-six million, two hundred twelve thousand, twenty".