1151261171 has 2 divisors, whose sum is σ = 1151261172. Its totient is φ = 1151261170.

The previous prime is 1151261119. The next prime is 1151261183. The reversal of 1151261171 is 1711621511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151261171 - 2⁶ = 1151261107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1151261171.

It is not a weakly prime, because it can be changed into another prime (1151221171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575630585 + 575630586.

It is an arithmetic number, because the mean of its divisors is an integer number (575630586).

Almost surely, 2^1151261171 is an apocalyptic number.

1151261171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151261171 is an equidigital number, since it uses as much as digits as its factorization.

1151261171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 26.

The square root of 1151261171 is about 33930.2397722150. The cubic root of 1151261171 is about 1048.0724033049.

Adding to 1151261171 its reverse (1711621511), we get a palindrome (2862882682).

The spelling of 1151261171 in words is "one billion, one hundred fifty-one million, two hundred sixty-one thousand, one hundred seventy-one".