52511509 has 2 divisors, whose sum is σ = 52511510. Its totient is φ = 52511508.

The previous prime is 52511491. The next prime is 52511519. The reversal of 52511509 is 90511525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 815409 = 7190^2 + 903^2 .

It is a cyclic number.

It is not a de Polignac number, because 52511509 - 2⁵ = 52511477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52511519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26255754 + 26255755.

It is an arithmetic number, because the mean of its divisors is an integer number (26255755).

Almost surely, 2^52511509 is an apocalyptic number.

It is an amenable number.

52511509 is a deficient number, since it is larger than the sum of its proper divisors (1).

52511509 is an equidigital number, since it uses as much as digits as its factorization.

52511509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 52511509 is about 7246.4825260260. The cubic root of 52511509 is about 374.4709790863.

The spelling of 52511509 in words is "fifty-two million, five hundred eleven thousand, five hundred nine".