53812687 has 2 divisors, whose sum is σ = 53812688. Its totient is φ = 53812686.

The previous prime is 53812679. The next prime is 53812711. The reversal of 53812687 is 78621835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53812687 - 2³ = 53812679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53819687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26906343 + 26906344.

It is an arithmetic number, because the mean of its divisors is an integer number (26906344).

Almost surely, 2^53812687 is an apocalyptic number.

53812687 is a deficient number, since it is larger than the sum of its proper divisors (1).

53812687 is an equidigital number, since it uses as much as digits as its factorization.

53812687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 53812687 is about 7335.7131214354. The cubic root of 53812687 is about 377.5387723871.

It can be divided in two parts, 538 and 12687, that added together give a square (13225 = 115²).

The spelling of 53812687 in words is "fifty-three million, eight hundred twelve thousand, six hundred eighty-seven".