100815045 has 16 divisors (see below), whose sum is σ = 169794240. Its totient is φ = 50937984.

The previous prime is 100815019. The next prime is 100815053. The reversal of 100815045 is 540518001.

It is a de Polignac number, because none of the positive numbers 2^k-100815045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176584 + ... + 177153.

It is an arithmetic number, because the mean of its divisors is an integer number (10612140).

Almost surely, 2^100815045 is an apocalyptic number.

100815045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100815045 is a deficient number, since it is larger than the sum of its proper divisors (68979195).

100815045 is a wasteful number, since it uses less digits than its factorization.

100815045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353764.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 100815045 is about 10040.6695493876. The cubic root of 100815045 is about 465.4165073810.

The spelling of 100815045 in words is "one hundred million, eight hundred fifteen thousand, forty-five".