531997273 has 4 divisors (see below), whose sum is σ = 532216080. Its totient is φ = 531778468.

The previous prime is 531997243. The next prime is 531997289. The reversal of 531997273 is 372799135.

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.

It is a cyclic number.

It is not a de Polignac number, because 531997273 - 2⁹ = 531996761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531997243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105715 + ... + 110632.

It is an arithmetic number, because the mean of its divisors is an integer number (133054020).

Almost surely, 2^531997273 is an apocalyptic number.

It is an amenable number.

531997273 is a deficient number, since it is larger than the sum of its proper divisors (218807).

531997273 is a wasteful number, since it uses less digits than its factorization.

531997273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218806.

The product of its digits is 357210, while the sum is 46.

The square root of 531997273 is about 23065.0660740437. The cubic root of 531997273 is about 810.2825174132.

The spelling of 531997273 in words is "five hundred thirty-one million, nine hundred ninety-seven thousand, two hundred seventy-three".