52013539 has 2 divisors, whose sum is σ = 52013540. Its totient is φ = 52013538.

The previous prime is 52013519. The next prime is 52013551. The reversal of 52013539 is 93531025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52013539 - 2⁷ = 52013411 is a prime.

It is not a weakly prime, because it can be changed into another prime (52013519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26006769 + 26006770.

It is an arithmetic number, because the mean of its divisors is an integer number (26006770).

Almost surely, 2^52013539 is an apocalyptic number.

52013539 is a deficient number, since it is larger than the sum of its proper divisors (1).

52013539 is an equidigital number, since it uses as much as digits as its factorization.

52013539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 52013539 is about 7212.0412505753. The cubic root of 52013539 is about 373.2835067608.

It can be divided in two parts, 520135 and 39, that multiplied together give a triangular number (20285265 = T₆₃₆₉).

The spelling of 52013539 in words is "fifty-two million, thirteen thousand, five hundred thirty-nine".