1165275001 has 8 divisors (see below), whose sum is σ = 1272763584. Its totient is φ = 1058045520.

The previous prime is 1165274993. The next prime is 1165275031. The reversal of 1165275001 is 1005725611.

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 1165275001 - 2³ = 1165274993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165275031) 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, 55306 + ... + 73411.

It is an arithmetic number, because the mean of its divisors is an integer number (159095448).

Almost surely, 2^1165275001 is an apocalyptic number.

1165275001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1165275001 is a deficient number, since it is larger than the sum of its proper divisors (107488583).

1165275001 is a wasteful number, since it uses less digits than its factorization.

1165275001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129551.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1165275001 is about 34136.1245750012. The cubic root of 1165275001 is about 1052.3078492151.

The spelling of 1165275001 in words is "one billion, one hundred sixty-five million, two hundred seventy-five thousand, one".