56571073 has 4 divisors (see below), whose sum is σ = 60922708. Its totient is φ = 52219440.

The previous prime is 56571071. The next prime is 56571089. The reversal of 56571073 is 37017565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38787984 + 17783089 = 6228^2 + 4217^2 .

It is not a de Polignac number, because 56571073 - 2¹ = 56571071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56571071) 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, 2175798 + ... + 2175823.

It is an arithmetic number, because the mean of its divisors is an integer number (15230677).

Almost surely, 2^56571073 is an apocalyptic number.

It is an amenable number.

56571073 is a deficient number, since it is larger than the sum of its proper divisors (4351635).

56571073 is a wasteful number, since it uses less digits than its factorization.

56571073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351634.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 56571073 is about 7521.3744089761. The cubic root of 56571073 is about 383.8823446876.

The spelling of 56571073 in words is "fifty-six million, five hundred seventy-one thousand, seventy-three".