40745555 has 4 divisors (see below), whose sum is σ = 48894672. Its totient is φ = 32596440.

The previous prime is 40745539. The next prime is 40745561. The reversal of 40745555 is 55554704.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40745555 - 2⁴ = 40745539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4074551 + ... + 4074560.

It is an arithmetic number, because the mean of its divisors is an integer number (12223668).

Almost surely, 2^40745555 is an apocalyptic number.

40745555 is a deficient number, since it is larger than the sum of its proper divisors (8149117).

40745555 is an equidigital number, since it uses as much as digits as its factorization.

40745555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149116.

The product of its (nonzero) digits is 70000, while the sum is 35.

The square root of 40745555 is about 6383.2244986370. The cubic root of 40745555 is about 344.1069249143.

The spelling of 40745555 in words is "forty million, seven hundred forty-five thousand, five hundred fifty-five".