40555811 has 8 divisors (see below), whose sum is σ = 41733120. Its totient is φ = 39382848.

The previous prime is 40555777. The next prime is 40555841. The reversal of 40555811 is 11855504.

40555811 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40555811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40555841) 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, 31070 + ... + 32348.

It is an arithmetic number, because the mean of its divisors is an integer number (5216640).

Almost surely, 2^40555811 is an apocalyptic number.

40555811 is a deficient number, since it is larger than the sum of its proper divisors (1177309).

40555811 is a wasteful number, since it uses less digits than its factorization.

40555811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 40555811 is about 6368.3444473427. The cubic root of 40555811 is about 343.5719476358.

It can be divided in two parts, 40555 and 811, that multiplied together give a triangular number (32890105 = T₈₁₁₀).

The spelling of 40555811 in words is "forty million, five hundred fifty-five thousand, eight hundred eleven".