1154321001 has 6 divisors (see below), whose sum is σ = 1667352570. Its totient is φ = 769547328.

The previous prime is 1154320963. The next prime is 1154321027. The reversal of 1154321001 is 1001234511.

It can be written as a sum of positive squares in only one way, i.e., 1037162025 + 117158976 = 32205^2 + 10824^2 .

It is not a de Polignac number, because 1154321001 - 2¹¹ = 1154318953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1154321071) 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, 64128936 + ... + 64128953.

It is an arithmetic number, because the mean of its divisors is an integer number (277892095).

Almost surely, 2^1154321001 is an apocalyptic number.

It is an amenable number.

1154321001 is a deficient number, since it is larger than the sum of its proper divisors (513031569).

1154321001 is a wasteful number, since it uses less digits than its factorization.

1154321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128257895 (or 128257892 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1154321001 is about 33975.2998662263. The cubic root of 1154321001 is about 1049.0001066278. Note that the first 3 decimals are identical.

Adding to 1154321001 its reverse (1001234511), we get a palindrome (2155555512).

The spelling of 1154321001 in words is "one billion, one hundred fifty-four million, three hundred twenty-one thousand, one".