53304521 has 2 divisors, whose sum is σ = 53304522. Its totient is φ = 53304520.

The previous prime is 53304499. The next prime is 53304569. The reversal of 53304521 is 12540335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41744521 + 11560000 = 6461^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 53304521 - 2¹⁸ = 53042377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53304421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26652260 + 26652261.

It is an arithmetic number, because the mean of its divisors is an integer number (26652261).

Almost surely, 2^53304521 is an apocalyptic number.

It is an amenable number.

53304521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53304521 is an equidigital number, since it uses as much as digits as its factorization.

53304521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53304521 is about 7300.9945212964. The cubic root of 53304521 is about 376.3466157331.

Adding to 53304521 its reverse (12540335), we get a palindrome (65844856).

The spelling of 53304521 in words is "fifty-three million, three hundred four thousand, five hundred twenty-one".