1165504053 has 32 divisors (see below), whose sum is σ = 1818169600. Its totient is φ = 663828480.

The previous prime is 1165504031. The next prime is 1165504097. The reversal of 1165504053 is 3504055611.

It is not a de Polignac number, because 1165504053 - 2²² = 1161309749 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 1165504053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165505053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345093 + ... + 348453.

It is an arithmetic number, because the mean of its divisors is an integer number (56817800).

Almost surely, 2^1165504053 is an apocalyptic number.

It is an amenable number.

1165504053 is a deficient number, since it is larger than the sum of its proper divisors (652665547).

1165504053 is an equidigital number, since it uses as much as digits as its factorization.

1165504053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722 (or 3708 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1165504053 is about 34139.4793897036. The cubic root of 1165504053 is about 1052.3767935776.

Adding to 1165504053 its reverse (3504055611), we get a palindrome (4669559664).

The spelling of 1165504053 in words is "one billion, one hundred sixty-five million, five hundred four thousand, fifty-three".