52236521 has 2 divisors, whose sum is σ = 52236522. Its totient is φ = 52236520.

The previous prime is 52236467. The next prime is 52236533. The reversal of 52236521 is 12563225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42719296 + 9517225 = 6536^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 52236521 - 2²² = 48042217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52236421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26118260 + 26118261.

It is an arithmetic number, because the mean of its divisors is an integer number (26118261).

Almost surely, 2^52236521 is an apocalyptic number.

It is an amenable number.

52236521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52236521 is an equidigital number, since it uses as much as digits as its factorization.

52236521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 52236521 is about 7227.4837253362. The cubic root of 52236521 is about 373.8161683426.

Adding to 52236521 its reverse (12563225), we get a palindrome (64799746).

The spelling of 52236521 in words is "fifty-two million, two hundred thirty-six thousand, five hundred twenty-one".