105054999 has 16 divisors (see below), whose sum is σ = 160323072. Its totient is φ = 59941728.

The previous prime is 105054979. The next prime is 105055021. The reversal of 105054999 is 999450501.

It is a happy number.

It is not a de Polignac number, because 105054999 - 2¹⁷ = 104923927 is a prime.

It is a super-2 number, since 2×105054999² = 22073105629780002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105054999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105054979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12237 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (10020192).

Almost surely, 2^105054999 is an apocalyptic number.

105054999 is a deficient number, since it is larger than the sum of its proper divisors (55268073).

105054999 is an equidigital number, since it uses as much as digits as its factorization.

105054999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 105054999 is about 10249.6340910298. The cubic root of 105054999 is about 471.8517545908.

The spelling of 105054999 in words is "one hundred five million, fifty-four thousand, nine hundred ninety-nine".