451351913 has 2 divisors, whose sum is σ = 451351914. Its totient is φ = 451351912.

The previous prime is 451351907. The next prime is 451351933. The reversal of 451351913 is 319153154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446392384 + 4959529 = 21128^2 + 2227^2 .

It is a cyclic number.

It is not a de Polignac number, because 451351913 - 2²⁴ = 434574697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 451351913.

It is not a weakly prime, because it can be changed into another prime (451351933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225675956 + 225675957.

It is an arithmetic number, because the mean of its divisors is an integer number (225675957).

Almost surely, 2^451351913 is an apocalyptic number.

It is an amenable number.

451351913 is a deficient number, since it is larger than the sum of its proper divisors (1).

451351913 is an equidigital number, since it uses as much as digits as its factorization.

451351913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 451351913 is about 21245.0444339380. The cubic root of 451351913 is about 767.0760605121.

The spelling of 451351913 in words is "four hundred fifty-one million, three hundred fifty-one thousand, nine hundred thirteen".