1155144535 has 8 divisors (see below), whose sum is σ = 1387741536. Its totient is φ = 923070240.

The previous prime is 1155144533. The next prime is 1155144541. The reversal of 1155144535 is 5354415511.

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

It is not a de Polignac number, because 1155144535 - 2¹ = 1155144533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155144535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155144533) 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, 125796 + ... + 134665.

It is an arithmetic number, because the mean of its divisors is an integer number (173467692).

Almost surely, 2^1155144535 is an apocalyptic number.

1155144535 is a deficient number, since it is larger than the sum of its proper divisors (232597001).

1155144535 is an equidigital number, since it uses as much as digits as its factorization.

1155144535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261353.

The product of its digits is 30000, while the sum is 34.

The square root of 1155144535 is about 33987.4173040553. The cubic root of 1155144535 is about 1049.2495120912.

The spelling of 1155144535 in words is "one billion, one hundred fifty-five million, one hundred forty-four thousand, five hundred thirty-five".