451401091 has 2 divisors, whose sum is σ = 451401092. Its totient is φ = 451401090.

The previous prime is 451401047. The next prime is 451401133. The reversal of 451401091 is 190104154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451401091 - 2²⁵ = 417846659 is a prime.

It is equal to p_23923312 and since 451401091 and 23923312 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (451401011) 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 as a sum of consecutive naturals, namely, 225700545 + 225700546.

It is an arithmetic number, because the mean of its divisors is an integer number (225700546).

Almost surely, 2^451401091 is an apocalyptic number.

451401091 is a deficient number, since it is larger than the sum of its proper divisors (1).

451401091 is an equidigital number, since it uses as much as digits as its factorization.

451401091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 451401091 is about 21246.2018017339. The cubic root of 451401091 is about 767.1039189639.

The spelling of 451401091 in words is "four hundred fifty-one million, four hundred one thousand, ninety-one".