1162287561 has 8 divisors (see below), whose sum is σ = 1549935040. Its totient is φ = 774749232.

The previous prime is 1162287541. The next prime is 1162287563. The reversal of 1162287561 is 1657822611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1162287561 - 2¹³ = 1162279369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1162287563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2076 + ... + 48258.

It is an arithmetic number, because the mean of its divisors is an integer number (193741880).

Almost surely, 2^1162287561 is an apocalyptic number.

It is an amenable number.

1162287561 is a deficient number, since it is larger than the sum of its proper divisors (387647479).

1162287561 is an equidigital number, since it uses as much as digits as its factorization.

1162287561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54575.

The product of its digits is 40320, while the sum is 39.

The square root of 1162287561 is about 34092.3387434773. The cubic root of 1162287561 is about 1051.4078050423.

The spelling of 1162287561 in words is "one billion, one hundred sixty-two million, two hundred eighty-seven thousand, five hundred sixty-one".