105100553 has 4 divisors (see below), whose sum is σ = 108724740. Its totient is φ = 101476368.

The previous prime is 105100549. The next prime is 105100561. The reversal of 105100553 is 355001501.

It is a happy number.

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 85137529 + 19963024 = 9227^2 + 4468^2 .

It is a cyclic number.

It is not a de Polignac number, because 105100553 - 2² = 105100549 is a prime.

It is a super-2 number, since 2×105100553² = 22092252481811618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105100543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812050 + ... + 1812107.

It is an arithmetic number, because the mean of its divisors is an integer number (27181185).

Almost surely, 2^105100553 is an apocalyptic number.

It is an amenable number.

105100553 is a deficient number, since it is larger than the sum of its proper divisors (3624187).

105100553 is an equidigital number, since it uses as much as digits as its factorization.

105100553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624186.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 105100553 is about 10251.8560758528. The cubic root of 105100553 is about 471.9199462647.

The spelling of 105100553 in words is "one hundred five million, one hundred thousand, five hundred fifty-three".