12513155 has 8 divisors (see below), whose sum is σ = 15094752. Its totient is φ = 9957888.

The previous prime is 12513101. The next prime is 12513157. The reversal of 12513155 is 55131521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12513155 - 2¹⁸ = 12251011 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 12513155.

It is not an unprimeable number, because it can be changed into a prime (12513157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5519 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (1886844).

Almost surely, 2^12513155 is an apocalyptic number.

12513155 is a deficient number, since it is larger than the sum of its proper divisors (2581597).

12513155 is a wasteful number, since it uses less digits than its factorization.

12513155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13165.

The product of its digits is 750, while the sum is 23.

The square root of 12513155 is about 3537.3938146607. The cubic root of 12513155 is about 232.1608266056.

Adding to 12513155 its reverse (55131521), we get a palindrome (67644676).

The spelling of 12513155 in words is "twelve million, five hundred thirteen thousand, one hundred fifty-five".