100288145 has 4 divisors (see below), whose sum is σ = 120345780. Its totient is φ = 80230512.

The previous prime is 100288129. The next prime is 100288159. The reversal of 100288145 is 541882001.

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 75047569 + 25240576 = 8663^2 + 5024^2 .

It is a cyclic number.

It is not a de Polignac number, because 100288145 - 2⁴ = 100288129 is a prime.

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, 10028810 + ... + 10028819.

It is an arithmetic number, because the mean of its divisors is an integer number (30086445).

Almost surely, 2^100288145 is an apocalyptic number.

It is an amenable number.

100288145 is a deficient number, since it is larger than the sum of its proper divisors (20057635).

100288145 is an equidigital number, since it uses as much as digits as its factorization.

100288145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20057634.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 100288145 is about 10014.3968864830. The cubic root of 100288145 is about 464.6042727172.

The spelling of 100288145 in words is "one hundred million, two hundred eighty-eight thousand, one hundred forty-five".