105153985 has 4 divisors (see below), whose sum is σ = 126184788. Its totient is φ = 84123184.

The previous prime is 105153967. The next prime is 105153991. The reversal of 105153985 is 589351501.

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 69105969 + 36048016 = 8313^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 105153985 - 2¹⁷ = 105022913 is a prime.

It is a super-2 number, since 2×105153985² = 22114721122760450, which contains 22 as substring.

It is a Duffinian 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, 10515394 + ... + 10515403.

It is an arithmetic number, because the mean of its divisors is an integer number (31546197).

Almost surely, 2^105153985 is an apocalyptic number.

It is an amenable number.

105153985 is a deficient number, since it is larger than the sum of its proper divisors (21030803).

105153985 is an equidigital number, since it uses as much as digits as its factorization.

105153985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21030802.

The product of its (nonzero) digits is 27000, while the sum is 37.

The square root of 105153985 is about 10254.4617118599. The cubic root of 105153985 is about 471.9999057383. Note that the first 4 decimals are identical.

The spelling of 105153985 in words is "one hundred five million, one hundred fifty-three thousand, nine hundred eighty-five".