494589553 has 2 divisors, whose sum is σ = 494589554. Its totient is φ = 494589552.

The previous prime is 494589547. The next prime is 494589581. The reversal of 494589553 is 355985494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493372944 + 1216609 = 22212^2 + 1103^2 .

It is a cyclic number.

It is not a de Polignac number, because 494589553 - 2²¹ = 492492401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494589553.

It is not a weakly prime, because it can be changed into another prime (494589503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247294776 + 247294777.

It is an arithmetic number, because the mean of its divisors is an integer number (247294777).

Almost surely, 2^494589553 is an apocalyptic number.

It is an amenable number.

494589553 is a deficient number, since it is larger than the sum of its proper divisors (1).

494589553 is an equidigital number, since it uses as much as digits as its factorization.

494589553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 52.

The square root of 494589553 is about 22239.3694380034. The cubic root of 494589553 is about 790.8272875046.

The spelling of 494589553 in words is "four hundred ninety-four million, five hundred eighty-nine thousand, five hundred fifty-three".