53689187 has 2 divisors, whose sum is σ = 53689188. Its totient is φ = 53689186.

The previous prime is 53689157. The next prime is 53689189. The reversal of 53689187 is 78198635.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53689187 - 2¹² = 53685091 is a prime.

Together with 53689189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53689189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26844593 + 26844594.

It is an arithmetic number, because the mean of its divisors is an integer number (26844594).

Almost surely, 2^53689187 is an apocalyptic number.

53689187 is a deficient number, since it is larger than the sum of its proper divisors (1).

53689187 is an equidigital number, since it uses as much as digits as its factorization.

53689187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 53689187 is about 7327.2905633665. The cubic root of 53689187 is about 377.2497342722.

The spelling of 53689187 in words is "fifty-three million, six hundred eighty-nine thousand, one hundred eighty-seven".