461506553 has 2 divisors, whose sum is σ = 461506554. Its totient is φ = 461506552.

The previous prime is 461506543. The next prime is 461506601. The reversal of 461506553 is 355605164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384277609 + 77228944 = 19603^2 + 8788^2 .

It is a cyclic number.

It is not a de Polignac number, because 461506553 - 2²⁸ = 193071097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (461506543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230753276 + 230753277.

It is an arithmetic number, because the mean of its divisors is an integer number (230753277).

Almost surely, 2^461506553 is an apocalyptic number.

It is an amenable number.

461506553 is a deficient number, since it is larger than the sum of its proper divisors (1).

461506553 is an equidigital number, since it uses as much as digits as its factorization.

461506553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 461506553 is about 21482.7035775295. The cubic root of 461506553 is about 772.7860800554.

The spelling of 461506553 in words is "four hundred sixty-one million, five hundred six thousand, five hundred fifty-three".