100156085 has 4 divisors (see below), whose sum is σ = 120187308. Its totient is φ = 80124864.

The previous prime is 100156051. The next prime is 100156093. The reversal of 100156085 is 580651001.

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 49589764 + 50566321 = 7042^2 + 7111^2 .

It is a cyclic number.

It is not a de Polignac number, because 100156085 - 2⁸ = 100155829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 10015604 + ... + 10015613.

It is an arithmetic number, because the mean of its divisors is an integer number (30046827).

Almost surely, 2^100156085 is an apocalyptic number.

It is an amenable number.

100156085 is a deficient number, since it is larger than the sum of its proper divisors (20031223).

100156085 is an equidigital number, since it uses as much as digits as its factorization.

100156085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20031222.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 100156085 is about 10007.8012070584. The cubic root of 100156085 is about 464.4002519558.

The spelling of 100156085 in words is "one hundred million, one hundred fifty-six thousand, eighty-five".