56166533 has 4 divisors (see below), whose sum is σ = 58103340. Its totient is φ = 54229728.

The previous prime is 56166499. The next prime is 56166541. The reversal of 56166533 is 33566165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13890529 + 42276004 = 3727^2 + 6502^2 .

It is a cyclic number.

It is not a de Polignac number, because 56166533 - 2⁶ = 56166469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56166493 and 56166502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56166563) 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, 968360 + ... + 968417.

It is an arithmetic number, because the mean of its divisors is an integer number (14525835).

Almost surely, 2^56166533 is an apocalyptic number.

It is an amenable number.

56166533 is a deficient number, since it is larger than the sum of its proper divisors (1936807).

56166533 is a wasteful number, since it uses less digits than its factorization.

56166533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936806.

The product of its digits is 48600, while the sum is 35.

The square root of 56166533 is about 7494.4334675811. The cubic root of 56166533 is about 382.9651066794.

The spelling of 56166533 in words is "fifty-six million, one hundred sixty-six thousand, five hundred thirty-three".