12554581 has 16 divisors (see below), whose sum is σ = 14232064. Its totient is φ = 10995264.

The previous prime is 12554579. The next prime is 12554623. The reversal of 12554581 is 18545521.

It is a cyclic number.

It is not a de Polignac number, because 12554581 - 2¹ = 12554579 is a prime.

It is a super-2 number, since 2×12554581² = 315235008171122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12554501) 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, 20380 + ... + 20986.

It is an arithmetic number, because the mean of its divisors is an integer number (889504).

Almost surely, 2^12554581 is an apocalyptic number.

It is an amenable number.

12554581 is a deficient number, since it is larger than the sum of its proper divisors (1677483).

12554581 is a wasteful number, since it uses less digits than its factorization.

12554581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its digits is 8000, while the sum is 31.

The square root of 12554581 is about 3543.2444171973. The cubic root of 12554581 is about 232.4167412988.

The spelling of 12554581 in words is "twelve million, five hundred fifty-four thousand, five hundred eighty-one".