52385521 has 2 divisors, whose sum is σ = 52385522. Its totient is φ = 52385520.

The previous prime is 52385507. The next prime is 52385537. The reversal of 52385521 is 12558325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 2131600 = 7089^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 52385521 - 2⁷ = 52385393 is a prime.

It is not a weakly prime, because it can be changed into another prime (52385561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26192760 + 26192761.

It is an arithmetic number, because the mean of its divisors is an integer number (26192761).

Almost surely, 2^52385521 is an apocalyptic number.

It is an amenable number.

52385521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52385521 is an equidigital number, since it uses as much as digits as its factorization.

52385521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 31.

The square root of 52385521 is about 7237.7842603935. The cubic root of 52385521 is about 374.1712566559.

The spelling of 52385521 in words is "fifty-two million, three hundred eighty-five thousand, five hundred twenty-one".