461323561 has 8 divisors (see below), whose sum is σ = 482154120. Its totient is φ = 440821248.

The previous prime is 461323559. The next prime is 461323567. The reversal of 461323561 is 165323164.

It can be written as a sum of positive squares in 4 ways, for example, as 13366336 + 447957225 = 3656^2 + 21165^2 .

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 461323561 - 2¹ = 461323559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461323567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79186 + ... + 84811.

It is an arithmetic number, because the mean of its divisors is an integer number (60269265).

Almost surely, 2^461323561 is an apocalyptic number.

It is an amenable number.

461323561 is a deficient number, since it is larger than the sum of its proper divisors (20830559).

461323561 is a wasteful number, since it uses less digits than its factorization.

461323561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164123.

The product of its digits is 12960, while the sum is 31.

The square root of 461323561 is about 21478.4441010051. Note that the first 3 decimals coincide. The cubic root of 461323561 is about 772.6839273960.

The spelling of 461323561 in words is "four hundred sixty-one million, three hundred twenty-three thousand, five hundred sixty-one".