56021320 has 32 divisors (see below), whose sum is σ = 126360000. Its totient is φ = 22353088.

The previous prime is 56021299. The next prime is 56021323. The reversal of 56021320 is 2312065.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56021323) 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, 17181 + ... + 20179.

It is an arithmetic number, because the mean of its divisors is an integer number (3948750).

Almost surely, 2^56021320 is an apocalyptic number.

It is an amenable number.

56021320 is an abundant number, since it is smaller than the sum of its proper divisors (70338680).

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

56021320 is a wasteful number, since it uses less digits than its factorization.

56021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 56021320 is about 7484.7391404110. The cubic root of 56021320 is about 382.6347824096.

Adding to 56021320 its reverse (2312065), we get a palindrome (58333385).

The spelling of 56021320 in words is "fifty-six million, twenty-one thousand, three hundred twenty".