12540558 has 16 divisors (see below), whose sum is σ = 25759440. Its totient is φ = 4067136.

The previous prime is 12540529. The next prime is 12540581. The reversal of 12540558 is 85504521.

It is a super-3 number, since 3×12540558³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28023 + ... + 28466.

It is an arithmetic number, because the mean of its divisors is an integer number (1609965).

Almost surely, 2^12540558 is an apocalyptic number.

12540558 is an abundant number, since it is smaller than the sum of its proper divisors (13218882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12540558 is a wasteful number, since it uses less digits than its factorization.

12540558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56531.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 12540558 is about 3541.2650282067. The cubic root of 12540558 is about 232.3301754421.

The spelling of 12540558 in words is "twelve million, five hundred forty thousand, five hundred fifty-eight".