52425521 has 2 divisors, whose sum is σ = 52425522. Its totient is φ = 52425520.

The previous prime is 52425491. The next prime is 52425553. The reversal of 52425521 is 12552425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 7921 = 7240^2 + 89^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52425521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52421521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26212760 + 26212761.

It is an arithmetic number, because the mean of its divisors is an integer number (26212761).

Almost surely, 2^52425521 is an apocalyptic number.

It is an amenable number.

52425521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52425521 is an equidigital number, since it uses as much as digits as its factorization.

52425521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000, while the sum is 26.

The square root of 52425521 is about 7240.5470097224. The cubic root of 52425521 is about 374.2664677129.

Adding to 52425521 its reverse (12552425), we get a palindrome (64977946).

The spelling of 52425521 in words is "fifty-two million, four hundred twenty-five thousand, five hundred twenty-one".