531054287 has 2 divisors, whose sum is σ = 531054288. Its totient is φ = 531054286.

The previous prime is 531054253. The next prime is 531054317. The reversal of 531054287 is 782450135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531054287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531050287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265527143 + 265527144.

It is an arithmetic number, because the mean of its divisors is an integer number (265527144).

Almost surely, 2^531054287 is an apocalyptic number.

531054287 is a deficient number, since it is larger than the sum of its proper divisors (1).

531054287 is an equidigital number, since it uses as much as digits as its factorization.

531054287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 531054287 is about 23044.6151410693. The cubic root of 531054287 is about 809.8034817672.

The spelling of 531054287 in words is "five hundred thirty-one million, fifty-four thousand, two hundred eighty-seven".