105901215 has 32 divisors (see below), whose sum is σ = 198888960. Its totient is φ = 47101824.

The previous prime is 105901207. The next prime is 105901241. The reversal of 105901215 is 512109501.

It is not a de Polignac number, because 105901215 - 2³ = 105901207 is a prime.

It is a super-2 number, since 2×105901215² = 22430134676952450, 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 31 ways as a sum of consecutive naturals, for example, 9745 + ... + 17514.

It is an arithmetic number, because the mean of its divisors is an integer number (6215280).

Almost surely, 2^105901215 is an apocalyptic number.

105901215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105901215 is a deficient number, since it is larger than the sum of its proper divisors (92987745).

105901215 is a wasteful number, since it uses less digits than its factorization.

105901215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 105901215 is about 10290.8315990497. The cubic root of 105901215 is about 473.1152870041.

The spelling of 105901215 in words is "one hundred five million, nine hundred one thousand, two hundred fifteen".