451291013 has 2 divisors, whose sum is σ = 451291014. Its totient is φ = 451291012.

The previous prime is 451291007. The next prime is 451291067. The reversal of 451291013 is 310192154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404532769 + 46758244 = 20113^2 + 6838^2 .

It is a cyclic number.

It is not a de Polignac number, because 451291013 - 2¹⁸ = 451028869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451290013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225645506 + 225645507.

It is an arithmetic number, because the mean of its divisors is an integer number (225645507).

Almost surely, 2^451291013 is an apocalyptic number.

It is an amenable number.

451291013 is a deficient number, since it is larger than the sum of its proper divisors (1).

451291013 is an equidigital number, since it uses as much as digits as its factorization.

451291013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 451291013 is about 21243.6111101667. The cubic root of 451291013 is about 767.0415589536.

The spelling of 451291013 in words is "four hundred fifty-one million, two hundred ninety-one thousand, thirteen".