505337897 has 4 divisors (see below), whose sum is σ = 518995716. Its totient is φ = 491680080.

The previous prime is 505337887. The next prime is 505337923. The reversal of 505337897 is 798733505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435515161 + 69822736 = 20869^2 + 8356^2 .

It is a cyclic number.

It is not a de Polignac number, because 505337897 - 2²⁰ = 504289321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505337827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6828854 + ... + 6828927.

It is an arithmetic number, because the mean of its divisors is an integer number (129748929).

Almost surely, 2^505337897 is an apocalyptic number.

It is an amenable number.

505337897 is a deficient number, since it is larger than the sum of its proper divisors (13657819).

505337897 is a wasteful number, since it uses less digits than its factorization.

505337897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13657818.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 505337897 is about 22479.7219066429. The cubic root of 505337897 is about 796.5149951590.

The spelling of 505337897 in words is "five hundred five million, three hundred thirty-seven thousand, eight hundred ninety-seven".