1155671 has 6 divisors (see below), whose sum is σ = 1270416. Its totient is φ = 1050500.

The previous prime is 1155659. The next prime is 1155689. The reversal of 1155671 is 1765511.

It is not a de Polignac number, because 1155671 - 2⁶ = 1155607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4655 + ... + 4896.

It is an arithmetic number, because the mean of its divisors is an integer number (211736).

2^1155671 is an apocalyptic number.

1155671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1155671 is a deficient number, since it is larger than the sum of its proper divisors (114745).

1155671 is an equidigital number, since it uses as much as digits as its factorization.

1155671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573 (or 9562 counting only the distinct ones).

The product of its digits is 1050, while the sum is 26.

The square root of 1155671 is about 1075.0213951359. The cubic root of 1155671 is about 104.9408888755.

The spelling of 1155671 in words is "one million, one hundred fifty-five thousand, six hundred seventy-one".