13118554 has 4 divisors (see below), whose sum is σ = 19677834. Its totient is φ = 6559276.

The previous prime is 13118551. The next prime is 13118563. The reversal of 13118554 is 45581131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9138529 + 3980025 = 3023^2 + 1995^2 .

It is not an unprimeable number, because it can be changed into a prime (13118551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3279637 + ... + 3279640.

Almost surely, 2^13118554 is an apocalyptic number.

13118554 is a deficient number, since it is larger than the sum of its proper divisors (6559280).

13118554 is an equidigital number, since it uses as much as digits as its factorization.

13118554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6559279.

The product of its digits is 2400, while the sum is 28.

The square root of 13118554 is about 3621.9544447715. The cubic root of 13118554 is about 235.8460764950.

Adding to 13118554 its reverse (45581131), we get a palindrome (58699685).

The spelling of 13118554 in words is "thirteen million, one hundred eighteen thousand, five hundred fifty-four".