101550005 has 4 divisors (see below), whose sum is σ = 121860012. Its totient is φ = 81240000.

The previous prime is 101549983. The next prime is 101550011. The reversal of 101550005 is 500055101.

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 75099556 + 26450449 = 8666^2 + 5143^2 .

It is not a de Polignac number, because 101550005 - 2¹² = 101545909 is a prime.

It is a Duffinian 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, 10154996 + ... + 10155005.

It is an arithmetic number, because the mean of its divisors is an integer number (30465003).

Almost surely, 2^101550005 is an apocalyptic number.

It is an amenable number.

101550005 is a deficient number, since it is larger than the sum of its proper divisors (20310007).

101550005 is an equidigital number, since it uses as much as digits as its factorization.

101550005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20310006.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 101550005 is about 10077.2022407015. The cubic root of 101550005 is about 466.5447603910.

The spelling of 101550005 in words is "one hundred one million, five hundred fifty thousand, five".