53863321 has 4 divisors (see below), whose sum is σ = 53917200. Its totient is φ = 53809444.

The previous prime is 53863291. The next prime is 53863333. The reversal of 53863321 is 12336835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53863321 - 2⁵ = 53863289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53867321) 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, 25411 + ... + 27448.

It is an arithmetic number, because the mean of its divisors is an integer number (13479300).

Almost surely, 2^53863321 is an apocalyptic number.

It is an amenable number.

53863321 is a deficient number, since it is larger than the sum of its proper divisors (53879).

53863321 is a wasteful number, since it uses less digits than its factorization.

53863321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53878.

The product of its digits is 12960, while the sum is 31.

The square root of 53863321 is about 7339.1635081936. The cubic root of 53863321 is about 377.6571478526.

The spelling of 53863321 in words is "fifty-three million, eight hundred sixty-three thousand, three hundred twenty-one".