53659387 has 2 divisors, whose sum is σ = 53659388. Its totient is φ = 53659386.

The previous prime is 53659343. The next prime is 53659393. The reversal of 53659387 is 78395635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53659387 - 2¹¹ = 53657339 is a prime.

It is not a weakly prime, because it can be changed into another prime (53659087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26829693 + 26829694.

It is an arithmetic number, because the mean of its divisors is an integer number (26829694).

Almost surely, 2^53659387 is an apocalyptic number.

53659387 is a deficient number, since it is larger than the sum of its proper divisors (1).

53659387 is an equidigital number, since it uses as much as digits as its factorization.

53659387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 53659387 is about 7325.2567873079. The cubic root of 53659387 is about 377.1799242955.

The spelling of 53659387 in words is "fifty-three million, six hundred fifty-nine thousand, three hundred eighty-seven".