13245551 has 4 divisors (see below), whose sum is σ = 14449704. Its totient is φ = 12041400.

The previous prime is 13245517. The next prime is 13245553. The reversal of 13245551 is 15554231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13245551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13245551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602060 + ... + 602081.

It is an arithmetic number, because the mean of its divisors is an integer number (3612426).

Almost surely, 2^13245551 is an apocalyptic number.

13245551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13245551 is a deficient number, since it is larger than the sum of its proper divisors (1204153).

13245551 is a wasteful number, since it uses less digits than its factorization.

13245551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204152.

The product of its digits is 3000, while the sum is 26.

The square root of 13245551 is about 3639.4437761834. The cubic root of 13245551 is about 236.6046867607.

Adding to 13245551 its reverse (15554231), we get a palindrome (28799782).

The spelling of 13245551 in words is "thirteen million, two hundred forty-five thousand, five hundred fifty-one".