40555560 has 64 divisors (see below), whose sum is σ = 124649280. Its totient is φ = 10549760.

The previous prime is 40555549. The next prime is 40555577. The reversal of 40555560 is 6555504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (1947645).

Almost surely, 2^40555560 is an apocalyptic number.

40555560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40555560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62324640).

40555560 is an abundant number, since it is smaller than the sum of its proper divisors (84093720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40555560 is a wasteful number, since it uses less digits than its factorization.

40555560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8298 (or 8294 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 40555560 is about 6368.3247404635. The cubic root of 40555560 is about 343.5712388451.

The spelling of 40555560 in words is "forty million, five hundred fifty-five thousand, five hundred sixty".