52125521 has 12 divisors (see below), whose sum is σ = 62271552. Its totient is φ = 42661344.

The previous prime is 52125467. The next prime is 52125523. The reversal of 52125521 is 12552125.

It is not a de Polignac number, because 52125521 - 2¹⁴ = 52109137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52125523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91325 + ... + 91893.

It is an arithmetic number, because the mean of its divisors is an integer number (5189296).

Almost surely, 2^52125521 is an apocalyptic number.

It is an amenable number.

52125521 is a deficient number, since it is larger than the sum of its proper divisors (10146031).

52125521 is an frugal number, since it uses more digits than its factorization.

52125521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 599 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 52125521 is about 7219.8006205158. The cubic root of 52125521 is about 373.5512003391.

Adding to 52125521 its reverse (12552125), we get a palindrome (64677646).

The spelling of 52125521 in words is "fifty-two million, one hundred twenty-five thousand, five hundred twenty-one".