52525309 has 4 divisors (see below), whose sum is σ = 52553440. Its totient is φ = 52497180.

The previous prime is 52525289. The next prime is 52525313. The reversal of 52525309 is 90352525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52525309 - 2¹⁵ = 52492541 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 (52525339) 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, 11049 + ... + 15070.

It is an arithmetic number, because the mean of its divisors is an integer number (13138360).

Almost surely, 2^52525309 is an apocalyptic number.

It is an amenable number.

52525309 is a deficient number, since it is larger than the sum of its proper divisors (28131).

52525309 is a wasteful number, since it uses less digits than its factorization.

52525309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28130.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 52525309 is about 7247.4346495846. The cubic root of 52525309 is about 374.5037798125.

The spelling of 52525309 in words is "fifty-two million, five hundred twenty-five thousand, three hundred nine".