1154545081 has 2 divisors, whose sum is σ = 1154545082. Its totient is φ = 1154545080.

The previous prime is 1154545079. The next prime is 1154545097. The reversal of 1154545081 is 1805454511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949625856 + 204919225 = 30816^2 + 14315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154545081 - 2¹ = 1154545079 is a prime.

It is a super-2 number, since 2×1154545081² = 2665948688122593122, which contains 22 as substring.

Together with 1154545079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1154545061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577272540 + 577272541.

It is an arithmetic number, because the mean of its divisors is an integer number (577272541).

Almost surely, 2^1154545081 is an apocalyptic number.

It is an amenable number.

1154545081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154545081 is an equidigital number, since it uses as much as digits as its factorization.

1154545081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 1154545081 is about 33978.5973960080. The cubic root of 1154545081 is about 1049.0679805078.

Adding to 1154545081 its reverse (1805454511), we get a palindrome (2959999592).

The spelling of 1154545081 in words is "one billion, one hundred fifty-four million, five hundred forty-five thousand, eighty-one".