1155247 has 2 divisors, whose sum is σ = 1155248. Its totient is φ = 1155246.

The previous prime is 1155239. The next prime is 1155263. The reversal of 1155247 is 7425511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155247 - 2³ = 1155239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577623 + 577624.

It is an arithmetic number, because the mean of its divisors is an integer number (577624).

2^1155247 is an apocalyptic number.

1155247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155247 is an equidigital number, since it uses as much as digits as its factorization.

1155247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 1155247 is about 1074.8241716672. The cubic root of 1155247 is about 104.9280535099.

The spelling of 1155247 in words is "one million, one hundred fifty-five thousand, two hundred forty-seven".