65752539 has 4 divisors (see below), whose sum is σ = 87670056. Its totient is φ = 43835024.

The previous prime is 65752523. The next prime is 65752543. The reversal of 65752539 is 93525756.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65752539 - 2⁴ = 65752523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65752539.

It is not an unprimeable number, because it can be changed into a prime (65752579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10958754 + ... + 10958759.

It is an arithmetic number, because the mean of its divisors is an integer number (21917514).

Almost surely, 2^65752539 is an apocalyptic number.

65752539 is a deficient number, since it is larger than the sum of its proper divisors (21917517).

65752539 is a wasteful number, since it uses less digits than its factorization.

65752539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21917516.

The product of its digits is 283500, while the sum is 42.

The square root of 65752539 is about 8108.7939300490. The cubic root of 65752539 is about 403.6182940969.

The spelling of 65752539 in words is "sixty-five million, seven hundred fifty-two thousand, five hundred thirty-nine".