1155267 has 12 divisors (see below), whose sum is σ = 1741584. Its totient is φ = 736560.

The previous prime is 1155263. The next prime is 1155293. The reversal of 1155267 is 7625511.

It is not a de Polignac number, because 1155267 - 2² = 1155263 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

1155267 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155267.

It is not an unprimeable number, because it can be changed into a prime (1155263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2584 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (145132).

2^1155267 is an apocalyptic number.

1155267 is a deficient number, since it is larger than the sum of its proper divisors (586317).

1155267 is a wasteful number, since it uses less digits than its factorization.

1155267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610 (or 5607 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1155267 is about 1074.8334754742. The cubic root of 1155267 is about 104.9286590222.

It can be divided in two parts, 11 and 55267, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 1155267 in words is "one million, one hundred fifty-five thousand, two hundred sixty-seven".