531772999 has 2 divisors, whose sum is σ = 531773000. Its totient is φ = 531772998.

The previous prime is 531772963. The next prime is 531773027. The reversal of 531772999 is 999277135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531772999 - 2²³ = 523384391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531772909) 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, 265886499 + 265886500.

It is an arithmetic number, because the mean of its divisors is an integer number (265886500).

Almost surely, 2^531772999 is an apocalyptic number.

531772999 is a deficient number, since it is larger than the sum of its proper divisors (1).

531772999 is an equidigital number, since it uses as much as digits as its factorization.

531772999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 52.

The square root of 531772999 is about 23060.2037935487. The cubic root of 531772999 is about 810.1686378545.

The spelling of 531772999 in words is "five hundred thirty-one million, seven hundred seventy-two thousand, nine hundred ninety-nine".