451441681 has 8 divisors (see below), whose sum is σ = 479265120. Its totient is φ = 423759168.

The previous prime is 451441657. The next prime is 451441789. The reversal of 451441681 is 186144154.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 451441681 - 2⁹ = 451441169 is a prime.

It is a super-2 number, since 2×451441681² = 407599182688211522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451441381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28591 + ... + 41476.

It is an arithmetic number, because the mean of its divisors is an integer number (59908140).

Almost surely, 2^451441681 is an apocalyptic number.

It is an amenable number.

451441681 is a deficient number, since it is larger than the sum of its proper divisors (27823439).

451441681 is a wasteful number, since it uses less digits than its factorization.

451441681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70463.

The product of its digits is 15360, while the sum is 34.

The square root of 451441681 is about 21247.1570098213. The cubic root of 451441681 is about 767.1269109441.

The spelling of 451441681 in words is "four hundred fifty-one million, four hundred forty-one thousand, six hundred eighty-one".