531292493 has 4 divisors (see below), whose sum is σ = 540002268. Its totient is φ = 522582720.

The previous prime is 531292471. The next prime is 531292507. The reversal of 531292493 is 394292135.

It is a happy number.

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 87853129 + 443439364 = 9373^2 + 21058^2 .

It is a cyclic number.

It is not a de Polignac number, because 531292493 - 2¹⁰ = 531291469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531292393) 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, 4354796 + ... + 4354917.

It is an arithmetic number, because the mean of its divisors is an integer number (135000567).

Almost surely, 2^531292493 is an apocalyptic number.

It is an amenable number.

531292493 is a deficient number, since it is larger than the sum of its proper divisors (8709775).

531292493 is an equidigital number, since it uses as much as digits as its factorization.

531292493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709774.

The product of its digits is 58320, while the sum is 38.

The square root of 531292493 is about 23049.7829273943. The cubic root of 531292493 is about 809.9245435984.

The spelling of 531292493 in words is "five hundred thirty-one million, two hundred ninety-two thousand, four hundred ninety-three".