52368521 has 8 divisors (see below), whose sum is σ = 54383784. Its totient is φ = 50388480.

The previous prime is 52368509. The next prime is 52368523. The reversal of 52368521 is 12586325.

It can be written as a sum of positive squares in 4 ways, for example, as 2524921 + 49843600 = 1589^2 + 7060^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52368521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52368523) 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, 5756 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (6797973).

Almost surely, 2^52368521 is an apocalyptic number.

It is an amenable number.

52368521 is a deficient number, since it is larger than the sum of its proper divisors (2015263).

52368521 is a wasteful number, since it uses less digits than its factorization.

52368521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17611.

The product of its digits is 14400, while the sum is 32.

The square root of 52368521 is about 7236.6097725385. The cubic root of 52368521 is about 374.1307772802.

The spelling of 52368521 in words is "fifty-two million, three hundred sixty-eight thousand, five hundred twenty-one".