40518505 has 8 divisors (see below), whose sum is σ = 48657600. Its totient is φ = 32391216.

The previous prime is 40518487. The next prime is 40518509. The reversal of 40518505 is 50581504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40518505 - 2²¹ = 38421353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40518509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9036 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (6082200).

Almost surely, 2^40518505 is an apocalyptic number.

It is an amenable number.

40518505 is a deficient number, since it is larger than the sum of its proper divisors (8139095).

40518505 is a wasteful number, since it uses less digits than its factorization.

40518505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 40518505 is about 6365.4147547509. The cubic root of 40518505 is about 343.4665683502.

The spelling of 40518505 in words is "forty million, five hundred eighteen thousand, five hundred five".