52616309 has 4 divisors (see below), whose sum is σ = 55711404. Its totient is φ = 49521216.

The previous prime is 52616299. The next prime is 52616321. The reversal of 52616309 is 90361625.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25472209 + 27144100 = 5047^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 52616309 - 2²⁴ = 35839093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52616329) 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, 1547522 + ... + 1547555.

It is an arithmetic number, because the mean of its divisors is an integer number (13927851).

Almost surely, 2^52616309 is an apocalyptic number.

It is an amenable number.

52616309 is a deficient number, since it is larger than the sum of its proper divisors (3095095).

52616309 is a wasteful number, since it uses less digits than its factorization.

52616309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095094.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 52616309 is about 7253.7100162606. The cubic root of 52616309 is about 374.7199307338.

It can be divided in two parts, 52616 and 309, that added together give a palindrome (52925).

The spelling of 52616309 in words is "fifty-two million, six hundred sixteen thousand, three hundred nine".