100615145 has 4 divisors (see below), whose sum is σ = 120738180. Its totient is φ = 80492112.

The previous prime is 100615091. The next prime is 100615153. The reversal of 100615145 is 541516001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73324969 + 27290176 = 8563^2 + 5224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100615145 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100615145.

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, 10061510 + ... + 10061519.

It is an arithmetic number, because the mean of its divisors is an integer number (30184545).

Almost surely, 2^100615145 is an apocalyptic number.

It is an amenable number.

100615145 is a deficient number, since it is larger than the sum of its proper divisors (20123035).

100615145 is an equidigital number, since it uses as much as digits as its factorization.

100615145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20123034.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 100615145 is about 10030.7100945048. The cubic root of 100615145 is about 465.1086885101.

The spelling of 100615145 in words is "one hundred million, six hundred fifteen thousand, one hundred forty-five".