541531 has 2 divisors, whose sum is σ = 541532. Its totient is φ = 541530.

The previous prime is 541529. The next prime is 541537. The reversal of 541531 is 135145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 541531 - 2¹ = 541529 is a prime.

It is a super-2 number, since 2×541531² = 586511647922, which contains 22 as substring.

Together with 541529, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 541499 and 541508.

It is not a weakly prime, because it can be changed into another prime (541537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270765 + 270766.

It is an arithmetic number, because the mean of its divisors is an integer number (270766).

2⁵⁴¹⁵³¹ is an apocalyptic number.

541531 is a deficient number, since it is larger than the sum of its proper divisors (1).

541531 is an equidigital number, since it uses as much as digits as its factorization.

541531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 19.

The square root of 541531 is about 735.8878990716. The cubic root of 541531 is about 81.5094146475.

Adding to 541531 its reverse (135145), we get a palindrome (676676).

The spelling of 541531 in words is "five hundred forty-one thousand, five hundred thirty-one".