451123493 has 2 divisors, whose sum is σ = 451123494. Its totient is φ = 451123492.

The previous prime is 451123489. The next prime is 451123511. The reversal of 451123493 is 394321154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323388289 + 127735204 = 17983^2 + 11302^2 .

It is a cyclic number.

It is not a de Polignac number, because 451123493 - 2² = 451123489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451123483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225561746 + 225561747.

It is an arithmetic number, because the mean of its divisors is an integer number (225561747).

Almost surely, 2^451123493 is an apocalyptic number.

It is an amenable number.

451123493 is a deficient number, since it is larger than the sum of its proper divisors (1).

451123493 is an equidigital number, since it uses as much as digits as its factorization.

451123493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 451123493 is about 21239.6679117165. The cubic root of 451123493 is about 766.9466381592.

The spelling of 451123493 in words is "four hundred fifty-one million, one hundred twenty-three thousand, four hundred ninety-three".