105243555 has 8 divisors (see below), whose sum is σ = 168389712. Its totient is φ = 56129888.

The previous prime is 105243553. The next prime is 105243557. The reversal of 105243555 is 555342501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (105243553) and next prime (105243557).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105243555 - 2¹ = 105243553 is a prime.

It is a super-2 number, since 2×105243555² = 22152411738076050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105243553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508104 + ... + 3508133.

It is an arithmetic number, because the mean of its divisors is an integer number (21048714).

Almost surely, 2^105243555 is an apocalyptic number.

105243555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105243555 is a deficient number, since it is larger than the sum of its proper divisors (63146157).

105243555 is an equidigital number, since it uses as much as digits as its factorization.

105243555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016245.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 105243555 is about 10258.8281494525. The cubic root of 105243555 is about 472.1338839652.

The spelling of 105243555 in words is "one hundred five million, two hundred forty-three thousand, five hundred fifty-five".