1161301557 has 32 divisors (see below), whose sum is σ = 1691269888. Its totient is φ = 704526336.

The previous prime is 1161301541. The next prime is 1161301627. The reversal of 1161301557 is 7551031611.

It is not a de Polignac number, because 1161301557 - 2⁴ = 1161301541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161300557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1410648 + ... + 1411470.

It is an arithmetic number, because the mean of its divisors is an integer number (52852184).

Almost surely, 2^1161301557 is an apocalyptic number.

It is an amenable number.

1161301557 is a deficient number, since it is larger than the sum of its proper divisors (529968331).

1161301557 is a wasteful number, since it uses less digits than its factorization.

1161301557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 1161301557 is about 34077.8748897287. The cubic root of 1161301557 is about 1051.1104071559.

The spelling of 1161301557 in words is "one billion, one hundred sixty-one million, three hundred one thousand, five hundred fifty-seven".