891334051 has 2 divisors, whose sum is σ = 891334052. Its totient is φ = 891334050.

The previous prime is 891334049. The next prime is 891334097. The reversal of 891334051 is 150433198.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 891334051 - 2¹ = 891334049 is a prime.

Together with 891334049, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 891333998 and 891334016.

It is not a weakly prime, because it can be changed into another prime (891334151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445667025 + 445667026.

It is an arithmetic number, because the mean of its divisors is an integer number (445667026).

Almost surely, 2^891334051 is an apocalyptic number.

891334051 is a deficient number, since it is larger than the sum of its proper divisors (1).

891334051 is an equidigital number, since it uses as much as digits as its factorization.

891334051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 891334051 is about 29855.2181536160. The cubic root of 891334051 is about 962.3805398711.

The spelling of 891334051 in words is "eight hundred ninety-one million, three hundred thirty-four thousand, fifty-one".