451221461 has 8 divisors (see below), whose sum is σ = 470133504. Its totient is φ = 432581760.

The previous prime is 451221437. The next prime is 451221499. The reversal of 451221461 is 164122154.

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 451221461 - 2¹⁰ = 451220437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451221461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451221961) 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, 64700 + ... + 71333.

It is an arithmetic number, because the mean of its divisors is an integer number (58766688).

Almost surely, 2^451221461 is an apocalyptic number.

It is an amenable number.

451221461 is a deficient number, since it is larger than the sum of its proper divisors (18912043).

451221461 is a wasteful number, since it uses less digits than its factorization.

451221461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136171.

The product of its digits is 1920, while the sum is 26.

The square root of 451221461 is about 21241.9740372688. The cubic root of 451221461 is about 767.0021519975.

The spelling of 451221461 in words is "four hundred fifty-one million, two hundred twenty-one thousand, four hundred sixty-one".