531542 has 16 divisors (see below), whose sum is σ = 894672. Its totient is φ = 234720.

The previous prime is 531521. The next prime is 531547. The reversal of 531542 is 245135.

It is a d-powerful number, because it can be written as 5 + 3³ + 5⁵ + 1 + 4⁶ + 2¹⁹ .

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531547) by changing a digit.

531542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488 + ... + 1140.

It is an arithmetic number, because the mean of its divisors is an integer number (55917).

2⁵³¹⁵⁴² is an apocalyptic number.

531542 is a deficient number, since it is larger than the sum of its proper divisors (363130).

531542 is a wasteful number, since it uses less digits than its factorization.

531542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 600, while the sum is 20.

The square root of 531542 is about 729.0692696857. The cubic root of 531542 is about 81.0051310066.

Adding to 531542 its reverse (245135), we get a palindrome (776677).

The spelling of 531542 in words is "five hundred thirty-one thousand, five hundred forty-two".