56515271 has 4 divisors (see below), whose sum is σ = 56686344. Its totient is φ = 56344200.

The previous prime is 56515247. The next prime is 56515273. The reversal of 56515271 is 17251565.

56515271 = T₄₁₁ + T₄₁₂ + ... + T₇₄₁.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17251565 = 5 ⋅3450313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56515271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515273) 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, 85040 + ... + 85701.

It is an arithmetic number, because the mean of its divisors is an integer number (14171586).

Almost surely, 2^56515271 is an apocalyptic number.

56515271 is a deficient number, since it is larger than the sum of its proper divisors (171073).

56515271 is a wasteful number, since it uses less digits than its factorization.

56515271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171072.

The product of its digits is 10500, while the sum is 32.

The square root of 56515271 is about 7517.6639323662. The cubic root of 56515271 is about 383.7560819841.

The spelling of 56515271 in words is "fifty-six million, five hundred fifteen thousand, two hundred seventy-one".