56512271 has 4 divisors (see below), whose sum is σ = 58461000. Its totient is φ = 54563544.

The previous prime is 56512243. The next prime is 56512343. The reversal of 56512271 is 17221565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17221565 = 5 ⋅3444313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56512271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1948699 = 56512271 / (5 + 6 + 5 + 1 + 2 + 2 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56512201) 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, 974321 + ... + 974378.

It is an arithmetic number, because the mean of its divisors is an integer number (14615250).

Almost surely, 2^56512271 is an apocalyptic number.

56512271 is a deficient number, since it is larger than the sum of its proper divisors (1948729).

56512271 is a wasteful number, since it uses less digits than its factorization.

56512271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948728.

The product of its digits is 4200, while the sum is 29.

The square root of 56512271 is about 7517.4643996497. The cubic root of 56512271 is about 383.7492915562.

The spelling of 56512271 in words is "fifty-six million, five hundred twelve thousand, two hundred seventy-one".