505285497 has 12 divisors (see below), whose sum is σ = 733564260. Its totient is φ = 335145888.

The previous prime is 505285481. The next prime is 505285507. The reversal of 505285497 is 794582505.

505285497 is a `hidden beast` number, since 50 + 52 + 8 + 549 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 497111616 + 8173881 = 22296^2 + 2859^2 .

It is not a de Polignac number, because 505285497 - 2⁴ = 505285481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505285447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140722 + ... + 144267.

It is an arithmetic number, because the mean of its divisors is an integer number (61130355).

Almost surely, 2^505285497 is an apocalyptic number.

It is an amenable number.

505285497 is a deficient number, since it is larger than the sum of its proper divisors (228278763).

505285497 is a wasteful number, since it uses less digits than its factorization.

505285497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285192 (or 285189 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 505285497 is about 22478.5563815829. The cubic root of 505285497 is about 796.4874631989.

The spelling of 505285497 in words is "five hundred five million, two hundred eighty-five thousand, four hundred ninety-seven".