451663161 has 8 divisors (see below), whose sum is σ = 604717344. Its totient is φ = 299858880.

The previous prime is 451663159. The next prime is 451663207. The reversal of 451663161 is 161366154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 451663161 - 2¹ = 451663159 is a prime.

It is a super-2 number, since 2×451663161² = 407999222009023842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (451613161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311631 + ... + 313076.

It is an arithmetic number, because the mean of its divisors is an integer number (75589668).

Almost surely, 2^451663161 is an apocalyptic number.

It is an amenable number.

451663161 is a deficient number, since it is larger than the sum of its proper divisors (153054183).

451663161 is a wasteful number, since it uses less digits than its factorization.

451663161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624951.

The product of its digits is 12960, while the sum is 33.

The square root of 451663161 is about 21252.3683621379. The cubic root of 451663161 is about 767.2523427904.

The spelling of 451663161 in words is "four hundred fifty-one million, six hundred sixty-three thousand, one hundred sixty-one".