490577 has 2 divisors, whose sum is σ = 490578. Its totient is φ = 490576.

The previous prime is 490573. The next prime is 490579. The reversal of 490577 is 775094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398161 + 92416 = 631^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 490577 - 2² = 490573 is a prime.

Together with 490579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245288 + 245289.

It is an arithmetic number, because the mean of its divisors is an integer number (245289).

2⁴⁹⁰⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

490577 is a deficient number, since it is larger than the sum of its proper divisors (1).

490577 is an equidigital number, since it uses as much as digits as its factorization.

490577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 490577 is about 700.4120215987. The cubic root of 490577 is about 78.8682844938.

Subtracting from 490577 its sum of digits (32), we obtain a triangular number (490545 = T₉₉₀).

The spelling of 490577 in words is "four hundred ninety thousand, five hundred seventy-seven".