56025021 has 12 divisors (see below), whose sum is σ = 80888928. Its totient is φ = 34476624.

The previous prime is 56025017. The next prime is 56025059. The reversal of 56025021 is 12052065.

It is not a de Polignac number, because 56025021 - 2² = 56025017 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56023021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54745 + ... + 55758.

It is an arithmetic number, because the mean of its divisors is an integer number (6740744).

Almost surely, 2^56025021 is an apocalyptic number.

It is an amenable number.

56025021 is a deficient number, since it is larger than the sum of its proper divisors (24863907).

56025021 is a wasteful number, since it uses less digits than its factorization.

56025021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110532 (or 110519 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 56025021 is about 7484.9863727331. The cubic root of 56025021 is about 382.6432083692.

Adding to 56025021 its reverse (12052065), we get a palindrome (68077086).

The spelling of 56025021 in words is "fifty-six million, twenty-five thousand, twenty-one".