1155232567 has 4 divisors (see below), whose sum is σ = 1174812840. Its totient is φ = 1135652296.

The previous prime is 1155232543. The next prime is 1155232571. The reversal of 1155232567 is 7652325511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7652325511 = 2053 ⋅3727387.

It is not a de Polignac number, because 1155232567 - 2⁷ = 1155232439 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 (1155232517) 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, 9790048 + ... + 9790165.

It is an arithmetic number, because the mean of its divisors is an integer number (293703210).

Almost surely, 2^1155232567 is an apocalyptic number.

1155232567 is a deficient number, since it is larger than the sum of its proper divisors (19580273).

1155232567 is an equidigital number, since it uses as much as digits as its factorization.

1155232567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19580272.

The product of its digits is 63000, while the sum is 37.

The square root of 1155232567 is about 33988.7123468954. The cubic root of 1155232567 is about 1049.2761653754.

The spelling of 1155232567 in words is "one billion, one hundred fifty-five million, two hundred thirty-two thousand, five hundred sixty-seven".