56417566 has 4 divisors (see below), whose sum is σ = 84626352. Its totient is φ = 28208782.

The previous prime is 56417503. The next prime is 56417573. The reversal of 56417566 is 66571465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66571465 = 5 ⋅13314293.

It is a super-3 number, since 3×56417566³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14104390 + ... + 14104393.

It is an arithmetic number, because the mean of its divisors is an integer number (21156588).

Almost surely, 2^56417566 is an apocalyptic number.

56417566 is a deficient number, since it is larger than the sum of its proper divisors (28208786).

56417566 is a wasteful number, since it uses less digits than its factorization.

56417566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28208785.

The product of its digits is 151200, while the sum is 40.

The square root of 56417566 is about 7511.1627595200. The cubic root of 56417566 is about 383.5348054130.

The spelling of 56417566 in words is "fifty-six million, four hundred seventeen thousand, five hundred sixty-six".