53523121 has 2 divisors, whose sum is σ = 53523122. Its totient is φ = 53523120.

The previous prime is 53523109. The next prime is 53523149. The reversal of 53523121 is 12132535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 24750625 = 5364^2 + 4975^2 .

It is a cyclic number.

It is not a de Polignac number, because 53523121 - 2¹⁷ = 53392049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53523092 and 53523101.

It is not a weakly prime, because it can be changed into another prime (53523181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26761560 + 26761561.

It is an arithmetic number, because the mean of its divisors is an integer number (26761561).

Almost surely, 2^53523121 is an apocalyptic number.

It is an amenable number.

53523121 is a deficient number, since it is larger than the sum of its proper divisors (1).

53523121 is an equidigital number, since it uses as much as digits as its factorization.

53523121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 22.

The square root of 53523121 is about 7315.9497674601. The cubic root of 53523121 is about 376.8603755600.

Adding to 53523121 its reverse (12132535), we get a palindrome (65655656).

The spelling of 53523121 in words is "fifty-three million, five hundred twenty-three thousand, one hundred twenty-one".