12555541 has 4 divisors (see below), whose sum is σ = 12792492. Its totient is φ = 12318592.

The previous prime is 12555511. The next prime is 12555547. The reversal of 12555541 is 14555521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6200100 + 6355441 = 2490^2 + 2521^2 .

It is a cyclic number.

It is not a de Polignac number, because 12555541 - 2⁵ = 12555509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118396 + ... + 118501.

It is an arithmetic number, because the mean of its divisors is an integer number (3198123).

Almost surely, 2^12555541 is an apocalyptic number.

It is an amenable number.

12555541 is a deficient number, since it is larger than the sum of its proper divisors (236951).

12555541 is an equidigital number, since it uses as much as digits as its factorization.

12555541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236950.

The product of its digits is 5000, while the sum is 28.

The square root of 12555541 is about 3543.3798836704. The cubic root of 12555541 is about 232.4226651494.

The spelling of 12555541 in words is "twelve million, five hundred fifty-five thousand, five hundred forty-one".