12115455 has 32 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 5808000.

The previous prime is 12115421. The next prime is 12115463. The reversal of 12115455 is 55451121.

It is not a de Polignac number, because 12115455 - 2⁸ = 12115199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16302 + ... + 17028.

It is an arithmetic number, because the mean of its divisors is an integer number (668304).

Almost surely, 2^12115455 is an apocalyptic number.

12115455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12115455 is a deficient number, since it is larger than the sum of its proper divisors (9270273).

12115455 is a wasteful number, since it uses less digits than its factorization.

12115455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its digits is 1000, while the sum is 24.

The square root of 12115455 is about 3480.7262173288. The cubic root of 12115455 is about 229.6747450458.

Adding to 12115455 its reverse (55451121), we get a palindrome (67566576).

It can be divided in two parts, 1211 and 5455, that added together give a palindrome (6666).

The spelling of 12115455 in words is "twelve million, one hundred fifteen thousand, four hundred fifty-five".