56518471 has 4 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 55883344.

The previous prime is 56518463. The next prime is 56518543. The reversal of 56518471 is 17481565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17481565 = 5 ⋅3496313.

It is a cyclic number.

It is not a de Polignac number, because 56518471 - 2³ = 56518463 is a prime.

It is a super-3 number, since 3×56518471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56518471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56518411) 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, 317431 + ... + 317608.

It is an arithmetic number, because the mean of its divisors is an integer number (14288400).

Almost surely, 2^56518471 is an apocalyptic number.

56518471 is a deficient number, since it is larger than the sum of its proper divisors (635129).

56518471 is an equidigital number, since it uses as much as digits as its factorization.

56518471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635128.

The product of its digits is 33600, while the sum is 37.

The square root of 56518471 is about 7517.8767614267. The cubic root of 56518471 is about 383.7633248423.

The spelling of 56518471 in words is "fifty-six million, five hundred eighteen thousand, four hundred seventy-one".