1151555311 has 2 divisors, whose sum is σ = 1151555312. Its totient is φ = 1151555310.

The previous prime is 1151555303. The next prime is 1151555381. The reversal of 1151555311 is 1135551511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1151555311 - 2³ = 1151555303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1151555311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151555381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575777655 + 575777656.

It is an arithmetic number, because the mean of its divisors is an integer number (575777656).

Almost surely, 2^1151555311 is an apocalyptic number.

1151555311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151555311 is an equidigital number, since it uses as much as digits as its factorization.

1151555311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1875, while the sum is 28.

The square root of 1151555311 is about 33934.5739769928. The cubic root of 1151555311 is about 1048.1616543435.

The spelling of 1151555311 in words is "one billion, one hundred fifty-one million, five hundred fifty-five thousand, three hundred eleven".