40885561 has 8 divisors (see below), whose sum is σ = 44298144. Its totient is φ = 37584960.

The previous prime is 40885553. The next prime is 40885567. The reversal of 40885561 is 16558804.

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

It is not a de Polignac number, because 40885561 - 2³ = 40885553 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 40885561.

It is not an unprimeable number, because it can be changed into a prime (40885567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27235 + ... + 28696.

It is an arithmetic number, because the mean of its divisors is an integer number (5537268).

Almost surely, 2^40885561 is an apocalyptic number.

It is an amenable number.

40885561 is a deficient number, since it is larger than the sum of its proper divisors (3412583).

40885561 is a wasteful number, since it uses less digits than its factorization.

40885561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55991.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 40885561 is about 6394.1818084881. The cubic root of 40885561 is about 344.5006035113.

The spelling of 40885561 in words is "forty million, eight hundred eighty-five thousand, five hundred sixty-one".