105485553581 has 4 divisors (see below), whose sum is σ = 105487435200. Its totient is φ = 105483671964.

The previous prime is 105485553533. The next prime is 105485553629. The reversal of 105485553581 is 185355584501.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (105485553533) and next prime (105485553629).

It is a cyclic number.

It is not a de Polignac number, because 105485553581 - 2¹⁴ = 105485537197 is a prime.

It is a super-2 number, since 2×105485553581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104485553581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854051 + ... + 969728.

It is an arithmetic number, because the mean of its divisors is an integer number (26371858800).

Almost surely, 2^105485553581 is an apocalyptic number.

It is an amenable number.

105485553581 is a deficient number, since it is larger than the sum of its proper divisors (1881619).

105485553581 is an equidigital number, since it uses as much as digits as its factorization.

105485553581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881618.

The product of its (nonzero) digits is 2400000, while the sum is 50.

The spelling of 105485553581 in words is "one hundred five billion, four hundred eighty-five million, five hundred fifty-three thousand, five hundred eighty-one".