52040521 has 16 divisors (see below), whose sum is σ = 57859200. Its totient is φ = 46500480.

The previous prime is 52040509. The next prime is 52040561. The reversal of 52040521 is 12504025.

It is a de Polignac number, because none of the positive numbers 2^k-52040521 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (52040561) 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 15 ways as a sum of consecutive naturals, for example, 86580 + ... + 87178.

It is an arithmetic number, because the mean of its divisors is an integer number (3616200).

Almost surely, 2^52040521 is an apocalyptic number.

It is an amenable number.

52040521 is a deficient number, since it is larger than the sum of its proper divisors (5818679).

52040521 is a wasteful number, since it uses less digits than its factorization.

52040521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 52040521 is about 7213.9116296223. The cubic root of 52040521 is about 373.3480424866.

Adding to 52040521 its reverse (12504025), we get a palindrome (64544546).

It can be divided in two parts, 520 and 40521, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 52040521 in words is "fifty-two million, forty thousand, five hundred twenty-one".