105455990 has 32 divisors (see below), whose sum is σ = 194586624. Its totient is φ = 41136480.

The previous prime is 105455969. The next prime is 105456053. The reversal of 105455990 is 99554501.

It is a super-2 number, since 2×105455990² = 22241931653760200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70955 + ... + 72425.

It is an arithmetic number, because the mean of its divisors is an integer number (6080832).

Almost surely, 2^105455990 is an apocalyptic number.

105455990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105455990 is a deficient number, since it is larger than the sum of its proper divisors (89130634).

105455990 is a wasteful number, since it uses less digits than its factorization.

105455990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 105455990 is about 10269.1766953344. The cubic root of 105455990 is about 472.4513392028.

The spelling of 105455990 in words is "one hundred five million, four hundred fifty-five thousand, nine hundred ninety".