505498553 has 54 divisors (see below), whose sum is σ = 673531038. Its totient is φ = 376911360.

The previous prime is 505498547. The next prime is 505498571. The reversal of 505498553 is 355894505.

It can be written as a sum of positive squares in 3 ways, for example, as 283024 + 505215529 = 532^2 + 22477^2 .

It is not a de Polignac number, because 505498553 - 2⁸ = 505498297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505498573) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 12329213 + ... + 12329253.

It is an arithmetic number, because the mean of its divisors is an integer number (12472797).

Almost surely, 2^505498553 is an apocalyptic number.

It is an amenable number.

505498553 is a deficient number, since it is larger than the sum of its proper divisors (168032485).

505498553 is a wasteful number, since it uses less digits than its factorization.

505498553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The square root of 505498553 is about 22483.2949764931. The cubic root of 505498553 is about 796.5993950265.

The spelling of 505498553 in words is "five hundred five million, four hundred ninety-eight thousand, five hundred fifty-three".