531402534 has 48 divisors (see below), whose sum is σ = 1293862752. Its totient is φ = 156397824.

The previous prime is 531402523. The next prime is 531402559. The reversal of 531402534 is 435204135.

It is a junction number, because it is equal to n+sod(n) for n = 531402498 and 531402507.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 43987 + ... + 54750.

It is an arithmetic number, because the mean of its divisors is an integer number (26955474).

Almost surely, 2^531402534 is an apocalyptic number.

531402534 is an abundant number, since it is smaller than the sum of its proper divisors (762460218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531402534 is a wasteful number, since it uses less digits than its factorization.

531402534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98781 (or 98778 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 531402534 is about 23052.1698327945. The cubic root of 531402534 is about 809.9804567758.

Adding to 531402534 its reverse (435204135), we get a palindrome (966606669).

The spelling of 531402534 in words is "five hundred thirty-one million, four hundred two thousand, five hundred thirty-four".