13145458 has 4 divisors (see below), whose sum is σ = 19718190. Its totient is φ = 6572728.

The previous prime is 13145449. The next prime is 13145479. The reversal of 13145458 is 85454131.

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., 7823209 + 5322249 = 2797^2 + 2307^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286363 + ... + 3286366.

Almost surely, 2^13145458 is an apocalyptic number.

13145458 is a deficient number, since it is larger than the sum of its proper divisors (6572732).

13145458 is an equidigital number, since it uses as much as digits as its factorization.

13145458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572731.

The product of its digits is 9600, while the sum is 31.

The square root of 13145458 is about 3625.6665594067. Note that the first 3 decimals coincide. The cubic root of 13145458 is about 236.0071935948.

Adding to 13145458 its reverse (85454131), we get a palindrome (98599589).

The spelling of 13145458 in words is "thirteen million, one hundred forty-five thousand, four hundred fifty-eight".