13145457 has 32 divisors (see below), whose sum is σ = 19869696. Its totient is φ = 7675200.

The previous prime is 13145449. The next prime is 13145479. The reversal of 13145457 is 75454131.

It is not a de Polignac number, because 13145457 - 2³ = 13145449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13145417) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 100282 + ... + 100412.

It is an arithmetic number, because the mean of its divisors is an integer number (620928).

Almost surely, 2^13145457 is an apocalyptic number.

It is an amenable number.

13145457 is a deficient number, since it is larger than the sum of its proper divisors (6724239).

13145457 is a wasteful number, since it uses less digits than its factorization.

13145457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its digits is 8400, while the sum is 30.

The square root of 13145457 is about 3625.6664215010. Note that the first 3 decimals coincide. The cubic root of 13145457 is about 236.0071876103.

Adding to 13145457 its reverse (75454131), we get a palindrome (88599588).

The spelling of 13145457 in words is "thirteen million, one hundred forty-five thousand, four hundred fifty-seven".