40556133 has 10 divisors (see below), whose sum is σ = 60583974. Its totient is φ = 27037368.

The previous prime is 40556119. The next prime is 40556177. The reversal of 40556133 is 33165504.

40556133 is a `hidden beast` number, since 40 + 5 + 5 + 613 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39350529 + 1205604 = 6273^2 + 1098^2 .

It is not a de Polignac number, because 40556133 - 2²⁰ = 39507557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40556097 and 40556106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40556233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 250266 + ... + 250427.

Almost surely, 2^40556133 is an apocalyptic number.

It is an amenable number.

40556133 is a deficient number, since it is larger than the sum of its proper divisors (20027841).

40556133 is an equidigital number, since it uses as much as digits as its factorization.

40556133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500705 (or 500696 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 40556133 is about 6368.3697285883. The cubic root of 40556133 is about 343.5728569167.

The spelling of 40556133 in words is "forty million, five hundred fifty-six thousand, one hundred thirty-three".