105215375 has 16 divisors (see below), whose sum is σ = 134110080. Its totient is φ = 82376800.

The previous prime is 105215371. The next prime is 105215381. The reversal of 105215375 is 573512501.

It is a happy number.

It is not a de Polignac number, because 105215375 - 2² = 105215371 is a prime.

It is a super-2 number, since 2×105215375² = 22140550272781250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105215371) 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, 3080 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (8381880).

Almost surely, 2^105215375 is an apocalyptic number.

105215375 is a deficient number, since it is larger than the sum of its proper divisors (28894705).

105215375 is an equidigital number, since it uses as much as digits as its factorization.

105215375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17971 (or 17961 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 105215375 is about 10257.4546062851. The cubic root of 105215375 is about 472.0917407020.

Adding to 105215375 its reverse (573512501), we get a palindrome (678727876).

The spelling of 105215375 in words is "one hundred five million, two hundred fifteen thousand, three hundred seventy-five".