12553517 has 6 divisors (see below), whose sum is σ = 12656718. Its totient is φ = 12451032.

The previous prime is 12553511. The next prime is 12553523. The reversal of 12553517 is 71535521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12553511) and next prime (12553523).

It can be written as a sum of positive squares in only one way, i.e., 7761796 + 4791721 = 2786^2 + 2189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12553517 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 12553517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39443 + ... + 39759.

It is an arithmetic number, because the mean of its divisors is an integer number (2109453).

Almost surely, 2^12553517 is an apocalyptic number.

It is an amenable number.

12553517 is a deficient number, since it is larger than the sum of its proper divisors (103201).

12553517 is an frugal number, since it uses more digits than its factorization.

12553517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 516 counting only the distinct ones).

The product of its digits is 5250, while the sum is 29.

The square root of 12553517 is about 3543.0942691382. The cubic root of 12553517 is about 232.4101753449.

The spelling of 12553517 in words is "twelve million, five hundred fifty-three thousand, five hundred seventeen".