101250155 has 4 divisors (see below), whose sum is σ = 121500192. Its totient is φ = 81000120.

The previous prime is 101250143. The next prime is 101250161. The reversal of 101250155 is 551052101.

It is a happy number.

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

It is not a de Polignac number, because 101250155 - 2⁴ = 101250139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10125011 + ... + 10125020.

It is an arithmetic number, because the mean of its divisors is an integer number (30375048).

Almost surely, 2^101250155 is an apocalyptic number.

101250155 is a deficient number, since it is larger than the sum of its proper divisors (20250037).

101250155 is an equidigital number, since it uses as much as digits as its factorization.

101250155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250036.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 101250155 is about 10062.3136007580. The cubic root of 101250155 is about 466.0851137305.

The spelling of 101250155 in words is "one hundred one million, two hundred fifty thousand, one hundred fifty-five".