1155130201 has 4 divisors (see below), whose sum is σ = 1155747492. Its totient is φ = 1154512912.

The previous prime is 1155130157. The next prime is 1155130217. The reversal of 1155130201 is 1020315511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1020315511 = 71 ⋅14370641.

It can be written as a sum of positive squares in 2 ways, for example, as 311169600 + 843960601 = 17640^2 + 29051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155130201 - 2¹⁷ = 1154999129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155130241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305830 + ... + 309583.

It is an arithmetic number, because the mean of its divisors is an integer number (288936873).

Almost surely, 2^1155130201 is an apocalyptic number.

It is an amenable number.

1155130201 is a deficient number, since it is larger than the sum of its proper divisors (617291).

1155130201 is an equidigital number, since it uses as much as digits as its factorization.

1155130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617290.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1155130201 is about 33987.2064312441. The cubic root of 1155130201 is about 1049.2451720846.

Adding to 1155130201 its reverse (1020315511), we get a palindrome (2175445712).

The spelling of 1155130201 in words is "one billion, one hundred fifty-five million, one hundred thirty thousand, two hundred one".