40508565 has 16 divisors (see below), whose sum is σ = 65596608. Its totient is φ = 21343616.

The previous prime is 40508557. The next prime is 40508581. The reversal of 40508565 is 56580504.

It is not a de Polignac number, because 40508565 - 2³ = 40508557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15024 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (4099788).

Almost surely, 2^40508565 is an apocalyptic number.

It is an amenable number.

40508565 is a deficient number, since it is larger than the sum of its proper divisors (25088043).

40508565 is a wasteful number, since it uses less digits than its factorization.

40508565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32628.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 40508565 is about 6364.6339250581. The cubic root of 40508565 is about 343.4384796460.

The spelling of 40508565 in words is "forty million, five hundred eight thousand, five hundred sixty-five".