52436521 has 8 divisors (see below), whose sum is σ = 53123840. Its totient is φ = 51753168.

The previous prime is 52436513. The next prime is 52436533. The reversal of 52436521 is 12563425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52436521 - 2³ = 52436513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52436521.

It is not an unprimeable number, because it can be changed into a prime (52436591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32680 + ... + 34246.

It is an arithmetic number, because the mean of its divisors is an integer number (6640480).

Almost surely, 2^52436521 is an apocalyptic number.

It is an amenable number.

52436521 is a deficient number, since it is larger than the sum of its proper divisors (687319).

52436521 is a wasteful number, since it uses less digits than its factorization.

52436521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983.

The product of its digits is 7200, while the sum is 28.

The square root of 52436521 is about 7241.3065809977. The cubic root of 52436521 is about 374.2926422627.

Adding to 52436521 its reverse (12563425), we get a palindrome (64999946).

The spelling of 52436521 in words is "fifty-two million, four hundred thirty-six thousand, five hundred twenty-one".