52185521 has 2 divisors, whose sum is σ = 52185522. Its totient is φ = 52185520.

The previous prime is 52185499. The next prime is 52185569. The reversal of 52185521 is 12558125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52128400 + 57121 = 7220^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 52185521 - 2¹⁴ = 52169137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52185421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26092760 + 26092761.

It is an arithmetic number, because the mean of its divisors is an integer number (26092761).

Almost surely, 2^52185521 is an apocalyptic number.

It is an amenable number.

52185521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52185521 is an equidigital number, since it uses as much as digits as its factorization.

52185521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000, while the sum is 29.

The square root of 52185521 is about 7223.9546648633. The cubic root of 52185521 is about 373.6944729461.

The spelling of 52185521 in words is "fifty-two million, one hundred eighty-five thousand, five hundred twenty-one".