1155127 has 2 divisors, whose sum is σ = 1155128. Its totient is φ = 1155126.

The previous prime is 1155107. The next prime is 1155149. The reversal of 1155127 is 7215511.

It is an a-pointer prime, because the next prime (1155149) can be obtained adding 1155127 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155127 is a prime.

It is a super-2 number, since 2×1155127² = 2668636772258, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1155098 and 1155107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577563 + 577564.

It is an arithmetic number, because the mean of its divisors is an integer number (577564).

2^1155127 is an apocalyptic number.

1155127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155127 is an equidigital number, since it uses as much as digits as its factorization.

1155127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350, while the sum is 22.

The square root of 1155127 is about 1074.7683471335. The cubic root of 1155127 is about 104.9244202890.

The spelling of 1155127 in words is "one million, one hundred fifty-five thousand, one hundred twenty-seven".