52985287 has 2 divisors, whose sum is σ = 52985288. Its totient is φ = 52985286.

The previous prime is 52985263. The next prime is 52985299. The reversal of 52985287 is 78258925.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52985287 - 2¹⁵ = 52952519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52985237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26492643 + 26492644.

It is an arithmetic number, because the mean of its divisors is an integer number (26492644).

Almost surely, 2^52985287 is an apocalyptic number.

52985287 is a deficient number, since it is larger than the sum of its proper divisors (1).

52985287 is an equidigital number, since it uses as much as digits as its factorization.

52985287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 52985287 is about 7279.0993261529. The cubic root of 52985287 is about 375.5938135686.

It can be divided in two parts, 5298 and 5287, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 52985287 in words is "fifty-two million, nine hundred eighty-five thousand, two hundred eighty-seven".