56021522 has 8 divisors (see below), whose sum is σ = 84069900. Its totient is φ = 27998224.

The previous prime is 56021521. The next prime is 56021527. The reversal of 56021522 is 22512065.

It can be written as a sum of positive squares in 2 ways, for example, as 40819321 + 15202201 = 6389^2 + 3899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (56021521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 10632.

Almost surely, 2^56021522 is an apocalyptic number.

56021522 is a deficient number, since it is larger than the sum of its proper divisors (28048378).

56021522 is a wasteful number, since it uses less digits than its factorization.

56021522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 56021522 is about 7484.7526345231. The cubic root of 56021522 is about 382.6352423067.

Adding to 56021522 its reverse (22512065), we get a palindrome (78533587).

The spelling of 56021522 in words is "fifty-six million, twenty-one thousand, five hundred twenty-two".