52525013 has 4 divisors (see below), whose sum is σ = 52734528. Its totient is φ = 52315500.

The previous prime is 52525001. The next prime is 52525021. The reversal of 52525013 is 31052525.

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 52525013 - 2¹⁴ = 52508629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52525013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52525093) 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, 104381 + ... + 104882.

It is an arithmetic number, because the mean of its divisors is an integer number (13183632).

Almost surely, 2^52525013 is an apocalyptic number.

It is an amenable number.

52525013 is a deficient number, since it is larger than the sum of its proper divisors (209515).

52525013 is a wasteful number, since it uses less digits than its factorization.

52525013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209514.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 52525013 is about 7247.4142285370. The cubic root of 52525013 is about 374.5030763210.

Adding to 52525013 its reverse (31052525), we get a palindrome (83577538).

The spelling of 52525013 in words is "fifty-two million, five hundred twenty-five thousand, thirteen".