105397451 has 4 divisors (see below), whose sum is σ = 105466872. Its totient is φ = 105328032.

The previous prime is 105397421. The next prime is 105397463. The reversal of 105397451 is 154793501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154793501 = 9293 ⋅16657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105397451 is a prime.

It is a super-2 number, since 2×105397451² = 22217245354594802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105397421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32381 + ... + 35486.

It is an arithmetic number, because the mean of its divisors is an integer number (26366718).

Almost surely, 2^105397451 is an apocalyptic number.

105397451 is a deficient number, since it is larger than the sum of its proper divisors (69421).

105397451 is an equidigital number, since it uses as much as digits as its factorization.

105397451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69420.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 105397451 is about 10266.3260711902. The cubic root of 105397451 is about 472.3639032085.

The spelling of 105397451 in words is "one hundred five million, three hundred ninety-seven thousand, four hundred fifty-one".