100255555 has 4 divisors (see below), whose sum is σ = 120306672. Its totient is φ = 80204440.

The previous prime is 100255543. The next prime is 100255567. The reversal of 100255555 is 555552001.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (100255543) and next prime (100255567).

It is a de Polignac number, because none of the positive numbers 2^k-100255555 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, 10025551 + ... + 10025560.

It is an arithmetic number, because the mean of its divisors is an integer number (30076668).

Almost surely, 2^100255555 is an apocalyptic number.

100255555 is a deficient number, since it is larger than the sum of its proper divisors (20051117).

100255555 is an equidigital number, since it uses as much as digits as its factorization.

100255555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20051116.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 100255555 is about 10012.7695968698. The cubic root of 100255555 is about 464.5539407673.

The spelling of 100255555 in words is "one hundred million, two hundred fifty-five thousand, five hundred fifty-five".