12901553 has 12 divisors (see below), whose sum is σ = 15077412. Its totient is φ = 11007360.

The previous prime is 12901543. The next prime is 12901571. The reversal of 12901553 is 35510921.

12901553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4092529 + 8809024 = 2023^2 + 2968^2 .

It is not a de Polignac number, because 12901553 - 2⁸ = 12901297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12901543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13301 + ... + 14237.

It is an arithmetic number, because the mean of its divisors is an integer number (1256451).

Almost surely, 2^12901553 is an apocalyptic number.

It is an amenable number.

12901553 is a deficient number, since it is larger than the sum of its proper divisors (2175859).

12901553 is an equidigital number, since it uses as much as digits as its factorization.

12901553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 12901553 is about 3591.8731881847. The cubic root of 12901553 is about 234.5384209713.

The spelling of 12901553 in words is "twelve million, nine hundred one thousand, five hundred fifty-three".