12554143 has 16 divisors (see below), whose sum is σ = 15508800. Its totient is φ = 10123008.

The previous prime is 12554141. The next prime is 12554147. The reversal of 12554143 is 34145521.

It is a happy number.

It is not a de Polignac number, because 12554143 - 2¹ = 12554141 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 (12554141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4755 + ... + 6907.

It is an arithmetic number, because the mean of its divisors is an integer number (969300).

Almost surely, 2^12554143 is an apocalyptic number.

12554143 is a deficient number, since it is larger than the sum of its proper divisors (2954657).

12554143 is an equidigital number, since it uses as much as digits as its factorization.

12554143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2177 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 12554143 is about 3543.1826088984. The cubic root of 12554143 is about 232.4140384417.

Adding to 12554143 its reverse (34145521), we get a palindrome (46699664).

The spelling of 12554143 in words is "twelve million, five hundred fifty-four thousand, one hundred forty-three".