53663647 has 2 divisors, whose sum is σ = 53663648. Its totient is φ = 53663646.

The previous prime is 53663639. The next prime is 53663671. The reversal of 53663647 is 74636635.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53663647 - 2³ = 53663639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53663147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26831823 + 26831824.

It is an arithmetic number, because the mean of its divisors is an integer number (26831824).

Almost surely, 2^53663647 is an apocalyptic number.

53663647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53663647 is an equidigital number, since it uses as much as digits as its factorization.

53663647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 40.

The square root of 53663647 is about 7325.5475563264. The cubic root of 53663647 is about 377.1899054256.

The spelling of 53663647 in words is "fifty-three million, six hundred sixty-three thousand, six hundred forty-seven".