40455565 has 8 divisors (see below), whose sum is σ = 48686328. Its totient is φ = 32271360.

The previous prime is 40455553. The next prime is 40455581. The reversal of 40455565 is 56555404.

40455565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2669956 + 37785609 = 1634^2 + 6147^2 .

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

It is not a de Polignac number, because 40455565 - 2¹⁹ = 39931277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40455565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9696 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (6085791).

Almost surely, 2^40455565 is an apocalyptic number.

It is an amenable number.

40455565 is a deficient number, since it is larger than the sum of its proper divisors (8230763).

40455565 is a wasteful number, since it uses less digits than its factorization.

40455565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23279.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 40455565 is about 6360.4689292536. The cubic root of 40455565 is about 343.2886332815.

The spelling of 40455565 in words is "forty million, four hundred fifty-five thousand, five hundred sixty-five".