451998853 has 2 divisors, whose sum is σ = 451998854. Its totient is φ = 451998852.

The previous prime is 451998821. The next prime is 451998857. The reversal of 451998853 is 358899154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399320289 + 52678564 = 19983^2 + 7258^2 .

It is a cyclic number.

It is not a de Polignac number, because 451998853 - 2⁵ = 451998821 is a prime.

It is a super-2 number, since 2×451998853² = 408605926226631218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 451998853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451998857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225999426 + 225999427.

It is an arithmetic number, because the mean of its divisors is an integer number (225999427).

Almost surely, 2^451998853 is an apocalyptic number.

It is an amenable number.

451998853 is a deficient number, since it is larger than the sum of its proper divisors (1).

451998853 is an equidigital number, since it uses as much as digits as its factorization.

451998853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 52.

The square root of 451998853 is about 21260.2646502813. The cubic root of 451998853 is about 767.4423787233.

The spelling of 451998853 in words is "four hundred fifty-one million, nine hundred ninety-eight thousand, eight hundred fifty-three".