13123455 has 16 divisors (see below), whose sum is σ = 21911040. Its totient is φ = 6694688.

The previous prime is 13123441. The next prime is 13123459. The reversal of 13123455 is 55432131.

It is a cyclic number.

It is not a de Polignac number, because 13123455 - 2⁵ = 13123423 is a prime.

It is a super-2 number, since 2×13123455² = 344450142274050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18675 + ... + 19364.

It is an arithmetic number, because the mean of its divisors is an integer number (1369440).

Almost surely, 2^13123455 is an apocalyptic number.

13123455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13123455 is a deficient number, since it is larger than the sum of its proper divisors (8787585).

13123455 is a wasteful number, since it uses less digits than its factorization.

13123455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38070.

The product of its digits is 1800, while the sum is 24.

The square root of 13123455 is about 3622.6309500141. The cubic root of 13123455 is about 235.8754429863.

Adding to 13123455 its reverse (55432131), we get a palindrome (68555586).

The spelling of 13123455 in words is "thirteen million, one hundred twenty-three thousand, four hundred fifty-five".