105145415 has 4 divisors (see below), whose sum is σ = 126174504. Its totient is φ = 84116328.

The previous prime is 105145393. The next prime is 105145441. The reversal of 105145415 is 514541501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514541501 = 6959 ⋅73939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105145415 is a prime.

It is a super-2 number, since 2×105145415² = 22111116591044450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 10514537 + ... + 10514546.

It is an arithmetic number, because the mean of its divisors is an integer number (31543626).

Almost surely, 2^105145415 is an apocalyptic number.

105145415 is a deficient number, since it is larger than the sum of its proper divisors (21029089).

105145415 is an equidigital number, since it uses as much as digits as its factorization.

105145415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21029088.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 105145415 is about 10254.0438364579. The cubic root of 105145415 is about 471.9870828003.

Adding to 105145415 its reverse (514541501), we get a palindrome (619686916).

The spelling of 105145415 in words is "one hundred five million, one hundred forty-five thousand, four hundred fifteen".