495581173 has 2 divisors, whose sum is σ = 495581174. Its totient is φ = 495581172.

The previous prime is 495581171. The next prime is 495581213. The reversal of 495581173 is 371185594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403286724 + 92294449 = 20082^2 + 9607^2 .

It is a cyclic number.

It is not a de Polignac number, because 495581173 - 2¹ = 495581171 is a prime.

Together with 495581171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495581171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247790586 + 247790587.

It is an arithmetic number, because the mean of its divisors is an integer number (247790587).

Almost surely, 2^495581173 is an apocalyptic number.

It is an amenable number.

495581173 is a deficient number, since it is larger than the sum of its proper divisors (1).

495581173 is an equidigital number, since it uses as much as digits as its factorization.

495581173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 495581173 is about 22261.6525217694. The cubic root of 495581173 is about 791.3554538349.

The spelling of 495581173 in words is "four hundred ninety-five million, five hundred eighty-one thousand, one hundred seventy-three".