40845555 has 24 divisors (see below), whose sum is σ = 71180928. Its totient is φ = 21666816.

The previous prime is 40845551. The next prime is 40845557. The reversal of 40845555 is 55554804.

It is not a de Polignac number, because 40845555 - 2² = 40845551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40845551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6334 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (2965872).

Almost surely, 2^40845555 is an apocalyptic number.

40845555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40845555 is a deficient number, since it is larger than the sum of its proper divisors (30335373).

40845555 is a wasteful number, since it uses less digits than its factorization.

40845555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907 (or 4904 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The square root of 40845555 is about 6391.0527301846. The cubic root of 40845555 is about 344.3882036938.

The spelling of 40845555 in words is "forty million, eight hundred forty-five thousand, five hundred fifty-five".