451091261 has 8 divisors (see below), whose sum is σ = 465888000. Its totient is φ = 436309920.

The previous prime is 451091257. The next prime is 451091273. The reversal of 451091261 is 162190154.

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 451091261 - 2² = 451091257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451091461) 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 in 7 ways as a sum of consecutive naturals, for example, 104810 + ... + 109028.

It is an arithmetic number, because the mean of its divisors is an integer number (58236000).

Almost surely, 2^451091261 is an apocalyptic number.

It is an amenable number.

451091261 is a deficient number, since it is larger than the sum of its proper divisors (14796739).

451091261 is a wasteful number, since it uses less digits than its factorization.

451091261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 451091261 is about 21238.9091292373. The cubic root of 451091261 is about 766.9283720501.

The spelling of 451091261 in words is "four hundred fifty-one million, ninety-one thousand, two hundred sixty-one".