53011687 has 2 divisors, whose sum is σ = 53011688. Its totient is φ = 53011686.

The previous prime is 53011669. The next prime is 53011697. The reversal of 53011687 is 78611035.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53011687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53011657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26505843 + 26505844.

It is an arithmetic number, because the mean of its divisors is an integer number (26505844).

Almost surely, 2^53011687 is an apocalyptic number.

53011687 is a deficient number, since it is larger than the sum of its proper divisors (1).

53011687 is an equidigital number, since it uses as much as digits as its factorization.

53011687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 53011687 is about 7280.9125114919. The cubic root of 53011687 is about 375.6561832745.

The spelling of 53011687 in words is "fifty-three million, eleven thousand, six hundred eighty-seven".