507491 has 2 divisors, whose sum is σ = 507492. Its totient is φ = 507490.

The previous prime is 507461. The next prime is 507497. The reversal of 507491 is 194705.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-507491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 507491.

It is not a weakly prime, because it can be changed into another prime (507497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253745 + 253746.

It is an arithmetic number, because the mean of its divisors is an integer number (253746).

2⁵⁰⁷⁴⁹¹ is an apocalyptic number.

507491 is a deficient number, since it is larger than the sum of its proper divisors (1).

507491 is an equidigital number, since it uses as much as digits as its factorization.

507491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 507491 is about 712.3840256491. The cubic root of 507491 is about 79.7644634623.

The spelling of 507491 in words is "five hundred seven thousand, four hundred ninety-one".