53999587 has 2 divisors, whose sum is σ = 53999588. Its totient is φ = 53999586.

The previous prime is 53999503. The next prime is 53999591. The reversal of 53999587 is 78599935.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53999587 - 2⁷ = 53999459 is a prime.

It is not a weakly prime, because it can be changed into another prime (53999597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26999793 + 26999794.

It is an arithmetic number, because the mean of its divisors is an integer number (26999794).

Almost surely, 2^53999587 is an apocalyptic number.

53999587 is a deficient number, since it is larger than the sum of its proper divisors (1).

53999587 is an equidigital number, since it uses as much as digits as its factorization.

53999587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 55.

The square root of 53999587 is about 7348.4411272051. The cubic root of 53999587 is about 377.9753513597.

The spelling of 53999587 in words is "fifty-three million, nine hundred ninety-nine thousand, five hundred eighty-seven".