12571155 has 24 divisors (see below), whose sum is σ = 21894912. Its totient is φ = 6672384.

The previous prime is 12571127. The next prime is 12571183. The reversal of 12571155 is 55117521.

12571155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12571127) and next prime (12571183).

It is not a de Polignac number, because 12571155 - 2²⁰ = 11522579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11022 + ... + 12108.

It is an arithmetic number, because the mean of its divisors is an integer number (912288).

Almost surely, 2^12571155 is an apocalyptic number.

12571155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12571155 is a deficient number, since it is larger than the sum of its proper divisors (9323757).

12571155 is a wasteful number, since it uses less digits than its factorization.

12571155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1352 counting only the distinct ones).

The product of its digits is 1750, while the sum is 27.

The square root of 12571155 is about 3545.5824627274. The cubic root of 12571155 is about 232.5189717436.

Adding to 12571155 its reverse (55117521), we get a palindrome (67688676).

The spelling of 12571155 in words is "twelve million, five hundred seventy-one thousand, one hundred fifty-five".