451955899 has 2 divisors, whose sum is σ = 451955900. Its totient is φ = 451955898.

The previous prime is 451955891. The next prime is 451955939. The reversal of 451955899 is 998559154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451955899 - 2³ = 451955891 is a prime.

It is not a weakly prime, because it can be changed into another prime (451955891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225977949 + 225977950.

It is an arithmetic number, because the mean of its divisors is an integer number (225977950).

Almost surely, 2^451955899 is an apocalyptic number.

451955899 is a deficient number, since it is larger than the sum of its proper divisors (1).

451955899 is an equidigital number, since it uses as much as digits as its factorization.

451955899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916000, while the sum is 55.

The square root of 451955899 is about 21259.2544318939. The cubic root of 451955899 is about 767.4180676260.

The spelling of 451955899 in words is "four hundred fifty-one million, nine hundred fifty-five thousand, eight hundred ninety-nine".