40555559 has 8 divisors (see below), whose sum is σ = 44343552. Its totient is φ = 36784440.

The previous prime is 40555549. The next prime is 40555577. The reversal of 40555559 is 95555504.

40555559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40555559 - 2²⁰ = 39506983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40555549) by changing a digit.

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, 1112 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (5542944).

Almost surely, 2^40555559 is an apocalyptic number.

40555559 is a deficient number, since it is larger than the sum of its proper divisors (3787993).

40555559 is a wasteful number, since it uses less digits than its factorization.

40555559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8437.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 40555559 is about 6368.3246619500. The cubic root of 40555559 is about 343.5712360213.

Subtracting 40555559 from its reverse (95555504), we obtain a palindrome (54999945).

It can be divided in two parts, 40555 and 559, that added together give a palindrome (41114).

The spelling of 40555559 in words is "forty million, five hundred fifty-five thousand, five hundred fifty-nine".