531889549 has 2 divisors, whose sum is σ = 531889550. Its totient is φ = 531889548.

The previous prime is 531889529. The next prime is 531889573. The reversal of 531889549 is 945988135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 473367049 + 58522500 = 21757^2 + 7650^2 .

It is a cyclic number.

It is not a de Polignac number, because 531889549 - 2⁵ = 531889517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531889496 and 531889505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531889529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265944774 + 265944775.

It is an arithmetic number, because the mean of its divisors is an integer number (265944775).

Almost surely, 2^531889549 is an apocalyptic number.

It is an amenable number.

531889549 is a deficient number, since it is larger than the sum of its proper divisors (1).

531889549 is an equidigital number, since it uses as much as digits as its factorization.

531889549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 52.

The square root of 531889549 is about 23062.7307359731. The cubic root of 531889549 is about 810.2278224172.

The spelling of 531889549 in words is "five hundred thirty-one million, eight hundred eighty-nine thousand, five hundred forty-nine".