105124555 has 4 divisors (see below), whose sum is σ = 126149472. Its totient is φ = 84099640.

The previous prime is 105124553. The next prime is 105124561. The reversal of 105124555 is 555421501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555421501 = 17 ⋅32671853.

It is not a de Polignac number, because 105124555 - 2¹ = 105124553 is a prime.

It is a super-2 number, since 2×105124555² = 22102344127896050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105124553) 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 3 ways as a sum of consecutive naturals, for example, 10512451 + ... + 10512460.

It is an arithmetic number, because the mean of its divisors is an integer number (31537368).

Almost surely, 2^105124555 is an apocalyptic number.

105124555 is a deficient number, since it is larger than the sum of its proper divisors (21024917).

105124555 is an equidigital number, since it uses as much as digits as its factorization.

105124555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21024916.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 105124555 is about 10253.0266263187. The cubic root of 105124555 is about 471.9558679292.

The spelling of 105124555 in words is "one hundred five million, one hundred twenty-four thousand, five hundred fifty-five".