100864455 has 32 divisors (see below), whose sum is σ = 165977856. Its totient is φ = 52276224.

The previous prime is 100864441. The next prime is 100864457. The reversal of 100864455 is 554468001.

It is not a de Polignac number, because 100864455 - 2⁶ = 100864391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100864457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227464 + ... + 227906.

It is an arithmetic number, because the mean of its divisors is an integer number (5186808).

Almost surely, 2^100864455 is an apocalyptic number.

100864455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100864455 is a deficient number, since it is larger than the sum of its proper divisors (65113401).

100864455 is a wasteful number, since it uses less digits than its factorization.

100864455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 100864455 is about 10043.1297412709. The cubic root of 100864455 is about 465.4925293471.

It can be divided in two parts, 10086 and 4455, that added together give a palindrome (14541).

The spelling of 100864455 in words is "one hundred million, eight hundred sixty-four thousand, four hundred fifty-five".