53537287 has 2 divisors, whose sum is σ = 53537288. Its totient is φ = 53537286.

The previous prime is 53537257. The next prime is 53537293. The reversal of 53537287 is 78273535.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53537287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53537257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26768643 + 26768644.

It is an arithmetic number, because the mean of its divisors is an integer number (26768644).

Almost surely, 2^53537287 is an apocalyptic number.

53537287 is a deficient number, since it is larger than the sum of its proper divisors (1).

53537287 is an equidigital number, since it uses as much as digits as its factorization.

53537287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The square root of 53537287 is about 7316.9178620509. The cubic root of 53537287 is about 376.8936205892.

It can be divided in two parts, 53537 and 287, that added together give a square (53824 = 232²).

The spelling of 53537287 in words is "fifty-three million, five hundred thirty-seven thousand, two hundred eighty-seven".