53257647 has 8 divisors (see below), whose sum is σ = 72742320. Its totient is φ = 34639040.

The previous prime is 53257643. The next prime is 53257669. The reversal of 53257647 is 74675235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53257647 - 2² = 53257643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53257643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216372 + ... + 216617.

It is an arithmetic number, because the mean of its divisors is an integer number (9092790).

Almost surely, 2^53257647 is an apocalyptic number.

53257647 is a deficient number, since it is larger than the sum of its proper divisors (19484673).

53257647 is a wasteful number, since it uses less digits than its factorization.

53257647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433033.

The product of its digits is 176400, while the sum is 39.

The square root of 53257647 is about 7297.7837046599. The cubic root of 53257647 is about 376.2362683406.

The spelling of 53257647 in words is "fifty-three million, two hundred fifty-seven thousand, six hundred forty-seven".