53556647 has 4 divisors (see below), whose sum is σ = 56707056. Its totient is φ = 50406240.

The previous prime is 53556631. The next prime is 53556721. The reversal of 53556647 is 74665535.

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 53556647 - 2⁴ = 53556631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53556847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1575179 + ... + 1575212.

It is an arithmetic number, because the mean of its divisors is an integer number (14176764).

Almost surely, 2^53556647 is an apocalyptic number.

53556647 is a deficient number, since it is larger than the sum of its proper divisors (3150409).

53556647 is a wasteful number, since it uses less digits than its factorization.

53556647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150408.

The product of its digits is 378000, while the sum is 41.

The square root of 53556647 is about 7318.2407038851. The cubic root of 53556647 is about 376.9390455104.

The spelling of 53556647 in words is "fifty-three million, five hundred fifty-six thousand, six hundred forty-seven".