40526613 has 6 divisors (see below), whose sum is σ = 58538454. Its totient is φ = 27017736.

The previous prime is 40526611. The next prime is 40526617. The reversal of 40526613 is 31662504.

40526613 is a `hidden beast` number, since 40 + 5 + 2 + 6 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29517489 + 11009124 = 5433^2 + 3318^2 .

It is not a de Polignac number, because 40526613 - 2¹ = 40526611 is a prime.

It is a super-2 number, since 2×40526613² = 3284812722503538, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40526611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251470 + ... + 2251487.

It is an arithmetic number, because the mean of its divisors is an integer number (9756409).

Almost surely, 2^40526613 is an apocalyptic number.

It is an amenable number.

40526613 is a deficient number, since it is larger than the sum of its proper divisors (18011841).

40526613 is a wasteful number, since it uses less digits than its factorization.

40526613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502963 (or 4502960 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40526613 is about 6366.0516020529. The cubic root of 40526613 is about 343.4894767407.

The spelling of 40526613 in words is "forty million, five hundred twenty-six thousand, six hundred thirteen".