12653533 has 2 divisors, whose sum is σ = 12653534. Its totient is φ = 12653532.

The previous prime is 12653513. The next prime is 12653539. The reversal of 12653533 is 33535621.

12653533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 1750329 = 3302^2 + 1323^2 .

It is a cyclic number.

It is not a de Polignac number, because 12653533 - 2⁹ = 12653021 is a prime.

It is a super-2 number, since 2×12653533² = 320223794764178, which contains 22 as substring.

It is equal to p₈₂₈₀₉₁ and since 12653533 and 828091 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12653539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326766 + 6326767.

It is an arithmetic number, because the mean of its divisors is an integer number (6326767).

Almost surely, 2^12653533 is an apocalyptic number.

It is an amenable number.

12653533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12653533 is an equidigital number, since it uses as much as digits as its factorization.

12653533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 28.

The square root of 12653533 is about 3557.1804845973. The cubic root of 12653533 is about 233.0257605047.

The spelling of 12653533 in words is "twelve million, six hundred fifty-three thousand, five hundred thirty-three".