451249133 has 2 divisors, whose sum is σ = 451249134. Its totient is φ = 451249132.

The previous prime is 451249079. The next prime is 451249159. The reversal of 451249133 is 331942154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451222564 + 26569 = 21242^2 + 163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451249133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451249133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451249163) 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, 225624566 + 225624567.

It is an arithmetic number, because the mean of its divisors is an integer number (225624567).

Almost surely, 2^451249133 is an apocalyptic number.

It is an amenable number.

451249133 is a deficient number, since it is larger than the sum of its proper divisors (1).

451249133 is an equidigital number, since it uses as much as digits as its factorization.

451249133 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 451249133 is about 21242.6253791757. The cubic root of 451249133 is about 767.0178309575.

It can be divided in two parts, 4512 and 49133, that multiplied together give a triangular number (221688096 = T₂₁₀₅₆).

The spelling of 451249133 in words is "four hundred fifty-one million, two hundred forty-nine thousand, one hundred thirty-three".