53247863 has 4 divisors (see below), whose sum is σ = 54965568. Its totient is φ = 51530160.

The previous prime is 53247853. The next prime is 53247869. The reversal of 53247863 is 36874235.

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 53247863 - 2²⁴ = 36470647 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 (53247869) 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, 858806 + ... + 858867.

It is an arithmetic number, because the mean of its divisors is an integer number (13741392).

Almost surely, 2^53247863 is an apocalyptic number.

53247863 is a deficient number, since it is larger than the sum of its proper divisors (1717705).

53247863 is a wasteful number, since it uses less digits than its factorization.

53247863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717704.

The product of its digits is 120960, while the sum is 38.

The square root of 53247863 is about 7297.1133333668. The cubic root of 53247863 is about 376.2132273860.

The spelling of 53247863 in words is "fifty-three million, two hundred forty-seven thousand, eight hundred sixty-three".