23155247 has 2 divisors, whose sum is σ = 23155248. Its totient is φ = 23155246.

The previous prime is 23155217. The next prime is 23155271. The reversal of 23155247 is 74255132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23155247 - 2⁸ = 23154991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23155217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11577623 + 11577624.

It is an arithmetic number, because the mean of its divisors is an integer number (11577624).

Almost surely, 2^23155247 is an apocalyptic number.

23155247 is a deficient number, since it is larger than the sum of its proper divisors (1).

23155247 is an equidigital number, since it uses as much as digits as its factorization.

23155247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 23155247 is about 4811.9899210202. The cubic root of 23155247 is about 285.0251214134.

The spelling of 23155247 in words is "twenty-three million, one hundred fifty-five thousand, two hundred forty-seven".