100772855 has 12 divisors (see below), whose sum is σ = 128461080. Its totient is φ = 75874944.

The previous prime is 100772843. The next prime is 100772857. The reversal of 100772855 is 558277001.

It is a de Polignac number, because none of the positive numbers 2^k-100772855 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100772857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33425 + ... + 36314.

It is an arithmetic number, because the mean of its divisors is an integer number (10705090).

Almost surely, 2^100772855 is an apocalyptic number.

100772855 is a deficient number, since it is larger than the sum of its proper divisors (27688225).

100772855 is an equidigital number, since it uses as much as digits as its factorization.

100772855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69778 (or 69761 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 100772855 is about 10038.5683740262. The cubic root of 100772855 is about 465.3515744066.

The spelling of 100772855 in words is "one hundred million, seven hundred seventy-two thousand, eight hundred fifty-five".