15355243 has 2 divisors, whose sum is σ = 15355244. Its totient is φ = 15355242.

The previous prime is 15355217. The next prime is 15355253. The reversal of 15355243 is 34255351.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15355243 is a prime.

It is not a weakly prime, because it can be changed into another prime (15355253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7677621 + 7677622.

It is an arithmetic number, because the mean of its divisors is an integer number (7677622).

Almost surely, 2^15355243 is an apocalyptic number.

15355243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15355243 is an equidigital number, since it uses as much as digits as its factorization.

15355243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 28.

The square root of 15355243 is about 3918.5766548582. The cubic root of 15355243 is about 248.5529361860.

The spelling of 15355243 in words is "fifteen million, three hundred fifty-five thousand, two hundred forty-three".