123344553 has 8 divisors (see below), whose sum is σ = 165321216. Its totient is φ = 81798800.

The previous prime is 123344539. The next prime is 123344579. The reversal of 123344553 is 355443321.

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 123344553 - 2¹⁰ = 123343529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123344553.

It is not an unprimeable number, because it can be changed into a prime (123344953) 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, 107058 + ... + 108203.

It is an arithmetic number, because the mean of its divisors is an integer number (20665152).

Almost surely, 2^123344553 is an apocalyptic number.

It is an amenable number.

123344553 is a deficient number, since it is larger than the sum of its proper divisors (41976663).

123344553 is a wasteful number, since it uses less digits than its factorization.

123344553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215455.

The product of its digits is 21600, while the sum is 30.

The square root of 123344553 is about 11106.0592921162. The cubic root of 123344553 is about 497.7829209852.

Adding to 123344553 its reverse (355443321), we get a palindrome (478787874).

The spelling of 123344553 in words is "one hundred twenty-three million, three hundred forty-four thousand, five hundred fifty-three".