56021145 has 32 divisors (see below), whose sum is σ = 92710272. Its totient is φ = 28864512.

The previous prime is 56021143. The next prime is 56021153. The reversal of 56021145 is 54112065.

56021145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56021145 - 2¹ = 56021143 is a prime.

It is a super-2 number, since 2×56021145² = 6276737374222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56021143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106854 + ... + 107376.

It is an arithmetic number, because the mean of its divisors is an integer number (2897196).

Almost surely, 2^56021145 is an apocalyptic number.

It is an amenable number.

56021145 is a deficient number, since it is larger than the sum of its proper divisors (36689127).

56021145 is a wasteful number, since it uses less digits than its factorization.

56021145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 56021145 is about 7484.7274499477. The cubic root of 56021145 is about 382.6343839829.

The spelling of 56021145 in words is "fifty-six million, twenty-one thousand, one hundred forty-five".