40504523 has 16 divisors (see below), whose sum is σ = 45684000. Its totient is φ = 35684352.

The previous prime is 40504517. The next prime is 40504543. The reversal of 40504523 is 32540504.

It is a cyclic number.

It is not a de Polignac number, because 40504523 - 2¹⁰ = 40503499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40504543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28043 + ... + 29451.

It is an arithmetic number, because the mean of its divisors is an integer number (2855250).

Almost surely, 2^40504523 is an apocalyptic number.

40504523 is a deficient number, since it is larger than the sum of its proper divisors (5179477).

40504523 is a wasteful number, since it uses less digits than its factorization.

40504523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40504523 is about 6364.3163811992. The cubic root of 40504523 is about 343.4270563457.

Subtracting from 40504523 its sum of digits (23), we obtain a triangular number (40504500 = T₉₀₀₀).

The spelling of 40504523 in words is "forty million, five hundred four thousand, five hundred twenty-three".