531552449 has 2 divisors, whose sum is σ = 531552450. Its totient is φ = 531552448.

The previous prime is 531552407. The next prime is 531552451. The reversal of 531552449 is 944255135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491420224 + 40132225 = 22168^2 + 6335^2 .

It is a cyclic number.

It is not a de Polignac number, because 531552449 - 2¹⁶ = 531486913 is a prime.

Together with 531552451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531552479) by changing a digit.

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 as a sum of consecutive naturals, namely, 265776224 + 265776225.

It is an arithmetic number, because the mean of its divisors is an integer number (265776225).

Almost surely, 2^531552449 is an apocalyptic number.

It is an amenable number.

531552449 is a deficient number, since it is larger than the sum of its proper divisors (1).

531552449 is an equidigital number, since it uses as much as digits as its factorization.

531552449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 38.

The square root of 531552449 is about 23055.4212496757. The cubic root of 531552449 is about 810.0566180004.

The spelling of 531552449 in words is "five hundred thirty-one million, five hundred fifty-two thousand, four hundred forty-nine".