481773581 has 2 divisors, whose sum is σ = 481773582. Its totient is φ = 481773580.

The previous prime is 481773533. The next prime is 481773587. The reversal of 481773581 is 185377184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241802500 + 239971081 = 15550^2 + 15491^2 .

It is a cyclic number.

It is not a de Polignac number, because 481773581 - 2⁶ = 481773517 is a prime.

It is a super-2 number, since 2×481773581² = 464211566699127122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481773587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240886790 + 240886791.

It is an arithmetic number, because the mean of its divisors is an integer number (240886791).

Almost surely, 2^481773581 is an apocalyptic number.

It is an amenable number.

481773581 is a deficient number, since it is larger than the sum of its proper divisors (1).

481773581 is an equidigital number, since it uses as much as digits as its factorization.

481773581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 44.

The square root of 481773581 is about 21949.3412429622. The cubic root of 481773581 is about 783.9366949831.

The spelling of 481773581 in words is "four hundred eighty-one million, seven hundred seventy-three thousand, five hundred eighty-one".