56021147 has 8 divisors (see below), whose sum is σ = 68949216. Its totient is φ = 44324352.

The previous prime is 56021143. The next prime is 56021153. The reversal of 56021147 is 74112065.

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

It is a cyclic number.

It is not a de Polignac number, because 56021147 - 2² = 56021143 is a prime.

It is a super-2 number, since 2×56021147² = 6276737822391218, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307718 + ... + 307899.

It is an arithmetic number, because the mean of its divisors is an integer number (8618652).

Almost surely, 2^56021147 is an apocalyptic number.

56021147 is a deficient number, since it is larger than the sum of its proper divisors (12928069).

56021147 is a wasteful number, since it uses less digits than its factorization.

56021147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615637.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 56021147 is about 7484.7275835531. The cubic root of 56021147 is about 382.6343885364.

The spelling of 56021147 in words is "fifty-six million, twenty-one thousand, one hundred forty-seven".