10507891 has 4 divisors (see below), whose sum is σ = 10529784. Its totient is φ = 10486000.

The previous prime is 10507879. The next prime is 10507897. The reversal of 10507891 is 19870501.

10507891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10507891 - 2¹⁵ = 10475123 is a prime.

It is a super-2 number, since 2×10507891² = 220831546535762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10507897) by changing a digit.

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, 10210 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (2632446).

Almost surely, 2^10507891 is an apocalyptic number.

10507891 is a deficient number, since it is larger than the sum of its proper divisors (21893).

10507891 is an equidigital number, since it uses as much as digits as its factorization.

10507891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21892.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 10507891 is about 3241.5877282591. The cubic root of 10507891 is about 219.0307984736.

The spelling of 10507891 in words is "ten million, five hundred seven thousand, eight hundred ninety-one".