53657663 has 4 divisors (see below), whose sum is σ = 53740488. Its totient is φ = 53574840.

The previous prime is 53657657. The next prime is 53657671. The reversal of 53657663 is 36675635.

53657663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53657663 - 2⁴ = 53657647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53657663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53657693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40433 + ... + 41738.

It is an arithmetic number, because the mean of its divisors is an integer number (13435122).

Almost surely, 2^53657663 is an apocalyptic number.

53657663 is a deficient number, since it is larger than the sum of its proper divisors (82825).

53657663 is an equidigital number, since it uses as much as digits as its factorization.

53657663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82824.

The product of its digits is 340200, while the sum is 41.

The square root of 53657663 is about 7325.1391113070. The cubic root of 53657663 is about 377.1758848336.

The spelling of 53657663 in words is "fifty-three million, six hundred fifty-seven thousand, six hundred sixty-three".