100253045 has 4 divisors (see below), whose sum is σ = 120303660. Its totient is φ = 80202432.

The previous prime is 100253003. The next prime is 100253053. The reversal of 100253045 is 540352001.

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 42523441 + 57729604 = 6521^2 + 7598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100253045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10025300 + ... + 10025309.

It is an arithmetic number, because the mean of its divisors is an integer number (30075915).

Almost surely, 2^100253045 is an apocalyptic number.

It is an amenable number.

100253045 is a deficient number, since it is larger than the sum of its proper divisors (20050615).

100253045 is an equidigital number, since it uses as much as digits as its factorization.

100253045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050614.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 100253045 is about 10012.6442561393. The cubic root of 100253045 is about 464.5500638745.

The spelling of 100253045 in words is "one hundred million, two hundred fifty-three thousand, forty-five".