1155033487 has 4 divisors (see below), whose sum is σ = 1155292056. Its totient is φ = 1154774920.

The previous prime is 1155033461. The next prime is 1155033491. The reversal of 1155033487 is 7843305511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155033487 - 2²⁷ = 1020815759 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 (1155033497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122464 + ... + 131557.

It is an arithmetic number, because the mean of its divisors is an integer number (288823014).

Almost surely, 2^1155033487 is an apocalyptic number.

1155033487 is a deficient number, since it is larger than the sum of its proper divisors (258569).

1155033487 is an equidigital number, since it uses as much as digits as its factorization.

1155033487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258568.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 1155033487 is about 33985.7836013825. The cubic root of 1155033487 is about 1049.2158883641.

Adding to 1155033487 its reverse (7843305511), we get a palindrome (8998338998).

The spelling of 1155033487 in words is "one billion, one hundred fifty-five million, thirty-three thousand, four hundred eighty-seven".