53105287 has 2 divisors, whose sum is σ = 53105288. Its totient is φ = 53105286.

The previous prime is 53105281. The next prime is 53105333. The reversal of 53105287 is 78250135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53105287 - 2¹⁵ = 53072519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53105281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26552643 + 26552644.

It is an arithmetic number, because the mean of its divisors is an integer number (26552644).

Almost surely, 2^53105287 is an apocalyptic number.

53105287 is a deficient number, since it is larger than the sum of its proper divisors (1).

53105287 is an equidigital number, since it uses as much as digits as its factorization.

53105287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 53105287 is about 7287.3374424408. The cubic root of 53105287 is about 375.8771455238.

The spelling of 53105287 in words is "fifty-three million, one hundred five thousand, two hundred eighty-seven".