481997 has 2 divisors, whose sum is σ = 481998. Its totient is φ = 481996.

The previous prime is 481963. The next prime is 482017. The reversal of 481997 is 799184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 361 = 694^2 + 19^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481997 is a prime.

It is a super-2 number, since 2×481997² = 464642216018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 481997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240998 + 240999.

It is an arithmetic number, because the mean of its divisors is an integer number (240999).

2⁴⁸¹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

481997 is a deficient number, since it is larger than the sum of its proper divisors (1).

481997 is an equidigital number, since it uses as much as digits as its factorization.

481997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 481997 is about 694.2600377380. The cubic root of 481997 is about 78.4057857906.

The spelling of 481997 in words is "four hundred eighty-one thousand, nine hundred ninety-seven".