107257891 has 4 divisors (see below), whose sum is σ = 115508512. Its totient is φ = 99007272.

The previous prime is 107257873. The next prime is 107257897. The reversal of 107257891 is 198752701.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 107257891 - 2¹⁷ = 107126819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107257897) 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, 4125291 + ... + 4125316.

It is an arithmetic number, because the mean of its divisors is an integer number (28877128).

Almost surely, 2^107257891 is an apocalyptic number.

107257891 is a deficient number, since it is larger than the sum of its proper divisors (8250621).

107257891 is an equidigital number, since it uses as much as digits as its factorization.

107257891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250620.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 107257891 is about 10356.5385626666. The cubic root of 107257891 is about 475.1270441339.

The spelling of 107257891 in words is "one hundred seven million, two hundred fifty-seven thousand, eight hundred ninety-one".