52642321 has 2 divisors, whose sum is σ = 52642322. Its totient is φ = 52642320.

The previous prime is 52642301. The next prime is 52642333. The reversal of 52642321 is 12324625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45751696 + 6890625 = 6764^2 + 2625^2 .

It is a cyclic number.

It is not a de Polignac number, because 52642321 - 2¹³ = 52634129 is a prime.

It is not a weakly prime, because it can be changed into another prime (52642301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26321160 + 26321161.

It is an arithmetic number, because the mean of its divisors is an integer number (26321161).

Almost surely, 2^52642321 is an apocalyptic number.

It is an amenable number.

52642321 is a deficient number, since it is larger than the sum of its proper divisors (1).

52642321 is an equidigital number, since it uses as much as digits as its factorization.

52642321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 25.

The square root of 52642321 is about 7255.5028082139. The cubic root of 52642321 is about 374.7816708369.

Adding to 52642321 its reverse (12324625), we get a palindrome (64966946).

The spelling of 52642321 in words is "fifty-two million, six hundred forty-two thousand, three hundred twenty-one".