40555545 has 32 divisors (see below), whose sum is σ = 66662400. Its totient is φ = 21047040.

The previous prime is 40555531. The next prime is 40555549. The reversal of 40555545 is 54555504.

It is not a de Polignac number, because 40555545 - 2⁵ = 40555513 is a prime.

It is a Curzon number.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116031 + ... + 116379.

It is an arithmetic number, because the mean of its divisors is an integer number (2083200).

Almost surely, 2^40555545 is an apocalyptic number.

It is an amenable number.

40555545 is a deficient number, since it is larger than the sum of its proper divisors (26106855).

40555545 is a wasteful number, since it uses less digits than its factorization.

40555545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 40555545 is about 6368.3235627597. The cubic root of 40555545 is about 343.5711964870.

The spelling of 40555545 in words is "forty million, five hundred fifty-five thousand, five hundred forty-five".