52251321 has 8 divisors (see below), whose sum is σ = 71288800. Its totient is φ = 34024032.

The previous prime is 52251317. The next prime is 52251379. The reversal of 52251321 is 12315225.

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

It is not a de Polignac number, because 52251321 - 2² = 52251317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52251821) 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, 202396 + ... + 202653.

It is an arithmetic number, because the mean of its divisors is an integer number (8911100).

Almost surely, 2^52251321 is an apocalyptic number.

It is an amenable number.

52251321 is a deficient number, since it is larger than the sum of its proper divisors (19037479).

52251321 is a wasteful number, since it uses less digits than its factorization.

52251321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405095.

The product of its digits is 600, while the sum is 21.

The square root of 52251321 is about 7228.5075223036. The cubic root of 52251321 is about 373.8514690400.

Adding to 52251321 its reverse (12315225), we get a palindrome (64566546).

The spelling of 52251321 in words is "fifty-two million, two hundred fifty-one thousand, three hundred twenty-one".