1155404071 has 2 divisors, whose sum is σ = 1155404072. Its totient is φ = 1155404070.

The previous prime is 1155404039. The next prime is 1155404093. The reversal of 1155404071 is 1704045511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155404071 - 2⁵ = 1155404039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155404671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577702035 + 577702036.

It is an arithmetic number, because the mean of its divisors is an integer number (577702036).

Almost surely, 2^1155404071 is an apocalyptic number.

1155404071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155404071 is an equidigital number, since it uses as much as digits as its factorization.

1155404071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1155404071 is about 33991.2352085063. The cubic root of 1155404071 is about 1049.3280874328.

Adding to 1155404071 its reverse (1704045511), we get a palindrome (2859449582).

The spelling of 1155404071 in words is "one billion, one hundred fifty-five million, four hundred four thousand, seventy-one".