52321817 has 4 divisors (see below), whose sum is σ = 53058816. Its totient is φ = 51584820.

The previous prime is 52321813. The next prime is 52321847. The reversal of 52321817 is 71812325.

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 52321817 - 2² = 52321813 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 52321817.

It is not an unprimeable number, because it can be changed into a prime (52321813) 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, 368393 + ... + 368534.

It is an arithmetic number, because the mean of its divisors is an integer number (13264704).

Almost surely, 2^52321817 is an apocalyptic number.

It is an amenable number.

52321817 is a deficient number, since it is larger than the sum of its proper divisors (736999).

52321817 is an equidigital number, since it uses as much as digits as its factorization.

52321817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736998.

The product of its digits is 3360, while the sum is 29.

The square root of 52321817 is about 7233.3821273316. The cubic root of 52321817 is about 374.0195234168.

The spelling of 52321817 in words is "fifty-two million, three hundred twenty-one thousand, eight hundred seventeen".