52004521 has 4 divisors (see below), whose sum is σ = 52464852. Its totient is φ = 51544192.

The previous prime is 52004509. The next prime is 52004591. The reversal of 52004521 is 12540025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18826921 + 33177600 = 4339^2 + 5760^2 .

It is a cyclic number.

It is not a de Polignac number, because 52004521 - 2¹⁵ = 51971753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52004591) 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, 229996 + ... + 230221.

It is an arithmetic number, because the mean of its divisors is an integer number (13116213).

Almost surely, 2^52004521 is an apocalyptic number.

It is an amenable number.

52004521 is a deficient number, since it is larger than the sum of its proper divisors (460331).

52004521 is a wasteful number, since it uses less digits than its factorization.

52004521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460330.

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

The square root of 52004521 is about 7211.4160190631. The cubic root of 52004521 is about 373.2619324727.

Adding to 52004521 its reverse (12540025), we get a palindrome (64544546).

It can be divided in two parts, 52004 and 521, that added together give a palindrome (52525).

The spelling of 52004521 in words is "fifty-two million, four thousand, five hundred twenty-one".