10451891 has 4 divisors (see below), whose sum is σ = 10493784. Its totient is φ = 10410000.

The previous prime is 10451887. The next prime is 10451897. The reversal of 10451891 is 19815401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19815401 = 1259 ⋅15739.

It is a cyclic number.

It is not a de Polignac number, because 10451891 - 2² = 10451887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10451897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20570 + ... + 21071.

It is an arithmetic number, because the mean of its divisors is an integer number (2623446).

Almost surely, 2^10451891 is an apocalyptic number.

10451891 is a deficient number, since it is larger than the sum of its proper divisors (41893).

10451891 is an equidigital number, since it uses as much as digits as its factorization.

10451891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41892.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 10451891 is about 3232.9384466766. The cubic root of 10451891 is about 218.6410095421.

The spelling of 10451891 in words is "ten million, four hundred fifty-one thousand, eight hundred ninety-one".