1155711053 has 8 divisors (see below), whose sum is σ = 1321382400. Its totient is φ = 990182160.

The previous prime is 1155711047. The next prime is 1155711071. The reversal of 1155711053 is 3501175511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155711053 - 2⁸ = 1155710797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155711083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17618 + ... + 51203.

It is an arithmetic number, because the mean of its divisors is an integer number (165172800).

Almost surely, 2^1155711053 is an apocalyptic number.

It is an amenable number.

1155711053 is a deficient number, since it is larger than the sum of its proper divisors (165671347).

1155711053 is an equidigital number, since it uses as much as digits as its factorization.

1155711053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71227.

The product of its (nonzero) digits is 2625, while the sum is 29.

The square root of 1155711053 is about 33995.7505138510. The cubic root of 1155711053 is about 1049.4210120117.

Adding to 1155711053 its reverse (3501175511), we get a palindrome (4656886564).

The spelling of 1155711053 in words is "one billion, one hundred fifty-five million, seven hundred eleven thousand, fifty-three".