105355581 has 4 divisors (see below), whose sum is σ = 140474112. Its totient is φ = 70237052.

The previous prime is 105355567. The next prime is 105355583. The reversal of 105355581 is 185553501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105355581 - 2¹⁴ = 105339197 is a prime.

It is a super-2 number, since 2×105355581² = 22199596895695122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105355583) 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, 17559261 + ... + 17559266.

It is an arithmetic number, because the mean of its divisors is an integer number (35118528).

Almost surely, 2^105355581 is an apocalyptic number.

It is an amenable number.

105355581 is a deficient number, since it is larger than the sum of its proper divisors (35118531).

105355581 is an equidigital number, since it uses as much as digits as its factorization.

105355581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35118530.

The product of its (nonzero) digits is 15000, while the sum is 33.

The square root of 105355581 is about 10264.2866776021. The cubic root of 105355581 is about 472.3013447817.

The spelling of 105355581 in words is "one hundred five million, three hundred fifty-five thousand, five hundred eighty-one".