12291355 has 8 divisors (see below), whose sum is σ = 14902272. Its totient is φ = 9731328.

The previous prime is 12291343. The next prime is 12291379. The reversal of 12291355 is 55319221.

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 12291355 - 2⁹ = 12290843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12187 + ... + 13156.

It is an arithmetic number, because the mean of its divisors is an integer number (1862784).

Almost surely, 2^12291355 is an apocalyptic number.

12291355 is a deficient number, since it is larger than the sum of its proper divisors (2610917).

12291355 is an equidigital number, since it uses as much as digits as its factorization.

12291355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25445.

The product of its digits is 2700, while the sum is 28.

The square root of 12291355 is about 3505.9028794306. The cubic root of 12291355 is about 230.7809308455.

The spelling of 12291355 in words is "twelve million, two hundred ninety-one thousand, three hundred fifty-five".