40216555 has 8 divisors (see below), whose sum is σ = 48301344. Its totient is φ = 32145600.

The previous prime is 40216541. The next prime is 40216619. The reversal of 40216555 is 55561204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40216555 - 2⁵ = 40216523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4690 + ... + 10120.

It is an arithmetic number, because the mean of its divisors is an integer number (6037668).

Almost surely, 2^40216555 is an apocalyptic number.

40216555 is a deficient number, since it is larger than the sum of its proper divisors (8084789).

40216555 is a wasteful number, since it uses less digits than its factorization.

40216555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 40216555 is about 6341.6523871937. The cubic root of 40216555 is about 342.6112519758.

Adding to 40216555 its reverse (55561204), we get a palindrome (95777759).

The spelling of 40216555 in words is "forty million, two hundred sixteen thousand, five hundred fifty-five".