12917355 has 32 divisors (see below), whose sum is σ = 22768128. Its totient is φ = 6253280.

The previous prime is 12917353. The next prime is 12917357. The reversal of 12917355 is 55371921.

12917355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12917353) and next prime (12917357).

It is not a de Polignac number, because 12917355 - 2¹ = 12917353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12917353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19642 + ... + 20288.

It is an arithmetic number, because the mean of its divisors is an integer number (711504).

Almost surely, 2^12917355 is an apocalyptic number.

12917355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12917355 is a deficient number, since it is larger than the sum of its proper divisors (9850773).

12917355 is an equidigital number, since it uses as much as digits as its factorization.

12917355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 666 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 12917355 is about 3594.0722029475. The cubic root of 12917355 is about 234.6341372010.

It can be divided in two parts, 1291 and 7355, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 12917355 in words is "twelve million, nine hundred seventeen thousand, three hundred fifty-five".