52532251 has 4 divisors (see below), whose sum is σ = 52573752. Its totient is φ = 52490752.

The previous prime is 52532237. The next prime is 52532281. The reversal of 52532251 is 15223525.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52532251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52532281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18790 + ... + 21403.

It is an arithmetic number, because the mean of its divisors is an integer number (13143438).

Almost surely, 2^52532251 is an apocalyptic number.

52532251 is a deficient number, since it is larger than the sum of its proper divisors (41501).

52532251 is a wasteful number, since it uses less digits than its factorization.

52532251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41500.

The product of its digits is 3000, while the sum is 25.

The square root of 52532251 is about 7247.9135618466. The cubic root of 52532251 is about 374.5202778320.

Adding to 52532251 its reverse (15223525), we get a palindrome (67755776).

The spelling of 52532251 in words is "fifty-two million, five hundred thirty-two thousand, two hundred fifty-one".