497491 has 2 divisors, whose sum is σ = 497492. Its totient is φ = 497490.

The previous prime is 497479. The next prime is 497501. The reversal of 497491 is 194794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 497491 - 2¹³ = 489299 is a prime.

It is an Ulam number.

497491 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (497411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248745 + 248746.

It is an arithmetic number, because the mean of its divisors is an integer number (248746).

2⁴⁹⁷⁴⁹¹ is an apocalyptic number.

497491 is a deficient number, since it is larger than the sum of its proper divisors (1).

497491 is an equidigital number, since it uses as much as digits as its factorization.

497491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 497491 is about 705.3304190236. The cubic root of 497491 is about 79.2370702733.

The spelling of 497491 in words is "four hundred ninety-seven thousand, four hundred ninety-one".