531291469 has 2 divisors, whose sum is σ = 531291470. Its totient is φ = 531291468.

The previous prime is 531291461. The next prime is 531291529. The reversal of 531291469 is 964192135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322633444 + 208658025 = 17962^2 + 14445^2 .

It is a cyclic number.

It is not a de Polignac number, because 531291469 - 2³ = 531291461 is a prime.

It is a super-2 number, since 2×531291469² = 564541250064355922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531291461) 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 as a sum of consecutive naturals, namely, 265645734 + 265645735.

It is an arithmetic number, because the mean of its divisors is an integer number (265645735).

Almost surely, 2^531291469 is an apocalyptic number.

It is an amenable number.

531291469 is a deficient number, since it is larger than the sum of its proper divisors (1).

531291469 is an equidigital number, since it uses as much as digits as its factorization.

531291469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 531291469 is about 23049.7607145931. The cubic root of 531291469 is about 809.9240232553.

The spelling of 531291469 in words is "five hundred thirty-one million, two hundred ninety-one thousand, four hundred sixty-nine".