505965497 has 4 divisors (see below), whose sum is σ = 532595280. Its totient is φ = 479335716.

The previous prime is 505965451. The next prime is 505965511. The reversal of 505965497 is 794569505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794569505 = 5 ⋅158913901.

It is a cyclic number.

It is not a de Polignac number, because 505965497 - 2¹⁴ = 505949113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505965437) 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, 13314863 + ... + 13314900.

It is an arithmetic number, because the mean of its divisors is an integer number (133148820).

Almost surely, 2^505965497 is an apocalyptic number.

It is an amenable number.

505965497 is a deficient number, since it is larger than the sum of its proper divisors (26629783).

505965497 is a wasteful number, since it uses less digits than its factorization.

505965497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26629782.

The product of its (nonzero) digits is 1701000, while the sum is 50.

The square root of 505965497 is about 22493.6768226095. The cubic root of 505965497 is about 796.8446003669.

The spelling of 505965497 in words is "five hundred five million, nine hundred sixty-five thousand, four hundred ninety-seven".