12290055 has 32 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 5991552.

The previous prime is 12290009. The next prime is 12290071. The reversal of 12290055 is 55009221.

It is not a de Polignac number, because 12290055 - 2¹⁴ = 12273671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7522 + ... + 9008.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^12290055 is an apocalyptic number.

12290055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12290055 is a deficient number, since it is larger than the sum of its proper divisors (9137145).

12290055 is a wasteful number, since it uses less digits than its factorization.

12290055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 12290055 is about 3505.7174729290. The cubic root of 12290055 is about 230.7727943467.

Adding to 12290055 its reverse (55009221), we get a palindrome (67299276).

The spelling of 12290055 in words is "twelve million, two hundred ninety thousand, fifty-five".