531355441 has 4 divisors (see below), whose sum is σ = 534108772. Its totient is φ = 528602112.

The previous prime is 531355399. The next prime is 531355477. The reversal of 531355441 is 144553135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144553135 = 5 ⋅28910627.

It can be written as a sum of positive squares in 2 ways, for example, as 233447841 + 297907600 = 15279^2 + 17260^2 .

It is a cyclic number.

It is not a de Polignac number, because 531355441 - 2¹¹ = 531353393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531355481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376376 + ... + 1376761.

It is an arithmetic number, because the mean of its divisors is an integer number (133527193).

Almost surely, 2^531355441 is an apocalyptic number.

It is an amenable number.

531355441 is a deficient number, since it is larger than the sum of its proper divisors (2753331).

531355441 is a wasteful number, since it uses less digits than its factorization.

531355441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753330.

The product of its digits is 18000, while the sum is 31.

The square root of 531355441 is about 23051.1483661877. The cubic root of 531355441 is about 809.9565291917.

The spelling of 531355441 in words is "five hundred thirty-one million, three hundred fifty-five thousand, four hundred forty-one".