451601489 has 2 divisors, whose sum is σ = 451601490. Its totient is φ = 451601488.

The previous prime is 451601477. The next prime is 451601531. The reversal of 451601489 is 984106154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377641489 + 73960000 = 19433^2 + 8600^2 .

It is a cyclic number.

It is not a de Polignac number, because 451601489 - 2⁴ = 451601473 is a prime.

It is a super-3 number, since 3×451601489³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_23933396 and since 451601489 and 23933396 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (451601089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225800744 + 225800745.

It is an arithmetic number, because the mean of its divisors is an integer number (225800745).

Almost surely, 2^451601489 is an apocalyptic number.

It is an amenable number.

451601489 is a deficient number, since it is larger than the sum of its proper divisors (1).

451601489 is an equidigital number, since it uses as much as digits as its factorization.

451601489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 451601489 is about 21250.9173684338. The cubic root of 451601489 is about 767.2174199065.

The spelling of 451601489 in words is "four hundred fifty-one million, six hundred one thousand, four hundred eighty-nine".