12545553 has 8 divisors (see below), whose sum is σ = 17179648. Its totient is φ = 8137584.

The previous prime is 12545527. The next prime is 12545563. The reversal of 12545553 is 35554521.

It is a happy number.

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

It is not a de Polignac number, because 12545553 - 2⁵ = 12545521 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 12545553.

It is not an unprimeable number, because it can be changed into a prime (12545563) 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, 56401 + ... + 56622.

It is an arithmetic number, because the mean of its divisors is an integer number (2147456).

Almost surely, 2^12545553 is an apocalyptic number.

It is an amenable number.

12545553 is a deficient number, since it is larger than the sum of its proper divisors (4634095).

12545553 is a wasteful number, since it uses less digits than its factorization.

12545553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113063.

The product of its digits is 15000, while the sum is 30.

The square root of 12545553 is about 3541.9702144428. The cubic root of 12545553 is about 232.3610176419.

The spelling of 12545553 in words is "twelve million, five hundred forty-five thousand, five hundred fifty-three".