12538558 has 4 divisors (see below), whose sum is σ = 18807840. Its totient is φ = 6269278.

The previous prime is 12538549. The next prime is 12538607. The reversal of 12538558 is 85583521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85583521 = 73 ⋅1172377.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134638 + ... + 3134641.

It is an arithmetic number, because the mean of its divisors is an integer number (4701960).

Almost surely, 2^12538558 is an apocalyptic number.

12538558 is a deficient number, since it is larger than the sum of its proper divisors (6269282).

12538558 is an equidigital number, since it uses as much as digits as its factorization.

12538558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269281.

The product of its digits is 48000, while the sum is 37.

The square root of 12538558 is about 3540.9826319823. The cubic root of 12538558 is about 232.3178239169.

It can be divided in two parts, 125 and 38558, that added together give a palindrome (38683).

The spelling of 12538558 in words is "twelve million, five hundred thirty-eight thousand, five hundred fifty-eight".