56511473 has 4 divisors (see below), whose sum is σ = 56731620. Its totient is φ = 56291328.

The previous prime is 56511467. The next prime is 56511487. The reversal of 56511473 is 37411565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37411565 = 5 ⋅7482313.

It can be written as a sum of positive squares in 2 ways, for example, as 45535504 + 10975969 = 6748^2 + 3313^2 .

It is a cyclic number.

It is not a de Polignac number, because 56511473 - 2¹⁰ = 56510449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56511443) 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, 109688 + ... + 110201.

It is an arithmetic number, because the mean of its divisors is an integer number (14182905).

Almost surely, 2^56511473 is an apocalyptic number.

It is an amenable number.

56511473 is a deficient number, since it is larger than the sum of its proper divisors (220147).

56511473 is a wasteful number, since it uses less digits than its factorization.

56511473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220146.

The product of its digits is 12600, while the sum is 32.

The square root of 56511473 is about 7517.4113230553. The cubic root of 56511473 is about 383.7474852619.

The spelling of 56511473 in words is "fifty-six million, five hundred eleven thousand, four hundred seventy-three".