100243455 has 32 divisors (see below), whose sum is σ = 173268480. Its totient is φ = 49196160.

The previous prime is 100243439. The next prime is 100243463. The reversal of 100243455 is 554342001.

It is not a de Polignac number, because 100243455 - 2⁴ = 100243439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85020 + ... + 86190.

It is an arithmetic number, because the mean of its divisors is an integer number (5414640).

Almost surely, 2^100243455 is an apocalyptic number.

100243455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100243455 is a deficient number, since it is larger than the sum of its proper divisors (73025025).

100243455 is a wasteful number, since it uses less digits than its factorization.

100243455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 100243455 is about 10012.1653502127. The cubic root of 100243455 is about 464.5352507677.

Adding to 100243455 its reverse (554342001), we get a palindrome (654585456).

The spelling of 100243455 in words is "one hundred million, two hundred forty-three thousand, four hundred fifty-five".