531263479 has 4 divisors (see below), whose sum is σ = 535446784. Its totient is φ = 527080176.

The previous prime is 531263477. The next prime is 531263497. The reversal of 531263479 is 974362135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974362135 = 5 ⋅194872427.

It is a cyclic number.

It is not a de Polignac number, because 531263479 - 2¹ = 531263477 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 (531263477) 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, 2091462 + ... + 2091715.

It is an arithmetic number, because the mean of its divisors is an integer number (133861696).

Almost surely, 2^531263479 is an apocalyptic number.

531263479 is a deficient number, since it is larger than the sum of its proper divisors (4183305).

531263479 is a wasteful number, since it uses less digits than its factorization.

531263479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183304.

The product of its digits is 136080, while the sum is 40.

The square root of 531263479 is about 23049.1535419416. The cubic root of 531263479 is about 809.9097999442.

The spelling of 531263479 in words is "five hundred thirty-one million, two hundred sixty-three thousand, four hundred seventy-nine".