105099955 has 16 divisors (see below), whose sum is σ = 129888000. Its totient is φ = 81593568.

The previous prime is 105099931. The next prime is 105099959. The reversal of 105099955 is 559990501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 105099955 - 2¹¹ = 105097907 is a prime.

It is a super-2 number, since 2×105099955² = 22092001082004050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (105099959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33546 + ... + 36544.

It is an arithmetic number, because the mean of its divisors is an integer number (8118000).

Almost surely, 2^105099955 is an apocalyptic number.

105099955 is a deficient number, since it is larger than the sum of its proper divisors (24788045).

105099955 is a wasteful number, since it uses less digits than its factorization.

105099955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its (nonzero) digits is 91125, while the sum is 43.

The square root of 105099955 is about 10251.8269103609. The cubic root of 105099955 is about 471.9190512214.

The spelling of 105099955 in words is "one hundred five million, ninety-nine thousand, nine hundred fifty-five".