40415565 has 32 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 20217600.

The previous prime is 40415549. The next prime is 40415569. The reversal of 40415565 is 56551404.

It is not a de Polignac number, because 40415565 - 2⁴ = 40415549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40415569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30415 + ... + 31715.

It is an arithmetic number, because the mean of its divisors is an integer number (2148300).

Almost surely, 2^40415565 is an apocalyptic number.

It is an amenable number.

40415565 is a deficient number, since it is larger than the sum of its proper divisors (28330035).

40415565 is a wasteful number, since it uses less digits than its factorization.

40415565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 40415565 is about 6357.3237293691. The cubic root of 40415565 is about 343.1754550043.

Adding to 40415565 its reverse (56551404), we get a palindrome (96966969).

The spelling of 40415565 in words is "forty million, four hundred fifteen thousand, five hundred sixty-five".