40516555 has 4 divisors (see below), whose sum is σ = 48619872. Its totient is φ = 32413240.

The previous prime is 40516543. The next prime is 40516571. The reversal of 40516555 is 55561504.

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

It is not a de Polignac number, because 40516555 - 2²³ = 32127947 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, 4051651 + ... + 4051660.

It is an arithmetic number, because the mean of its divisors is an integer number (12154968).

Almost surely, 2^40516555 is an apocalyptic number.

40516555 is a deficient number, since it is larger than the sum of its proper divisors (8103317).

40516555 is an equidigital number, since it uses as much as digits as its factorization.

40516555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103316.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 40516555 is about 6365.2615814277. The cubic root of 40516555 is about 343.4610583530.

The spelling of 40516555 in words is "forty million, five hundred sixteen thousand, five hundred fifty-five".