105457857 has 4 divisors (see below), whose sum is σ = 140610480. Its totient is φ = 70305236.

The previous prime is 105457853. The next prime is 105457867. The reversal of 105457857 is 758754501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758754501 = 3 ⋅252918167.

It is a cyclic number.

It is not a de Polignac number, because 105457857 - 2² = 105457853 is a prime.

It is a super-2 number, since 2×105457857² = 22242719206064898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105457853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17576307 + ... + 17576312.

It is an arithmetic number, because the mean of its divisors is an integer number (35152620).

Almost surely, 2^105457857 is an apocalyptic number.

It is an amenable number.

105457857 is a deficient number, since it is larger than the sum of its proper divisors (35152623).

105457857 is an equidigital number, since it uses as much as digits as its factorization.

105457857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35152622.

The product of its (nonzero) digits is 196000, while the sum is 42.

The square root of 105457857 is about 10269.2675980325. The cubic root of 105457857 is about 472.4541272898.

The spelling of 105457857 in words is "one hundred five million, four hundred fifty-seven thousand, eight hundred fifty-seven".