1155055493 has 8 divisors (see below), whose sum is σ = 1177827456. Its totient is φ = 1132506000.

The previous prime is 1155055459. The next prime is 1155055511. The reversal of 1155055493 is 3945505511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1155055493 - 2¹⁸ = 1154793349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155055453) 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, 45113 + ... + 65918.

It is an arithmetic number, because the mean of its divisors is an integer number (147228432).

Almost surely, 2^1155055493 is an apocalyptic number.

It is an amenable number.

1155055493 is a deficient number, since it is larger than the sum of its proper divisors (22771963).

1155055493 is a wasteful number, since it uses less digits than its factorization.

1155055493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111235.

The product of its (nonzero) digits is 67500, while the sum is 38.

The square root of 1155055493 is about 33986.1073528582. The cubic root of 1155055493 is about 1049.2225516336. Note that the first 3 decimals are identical.

The spelling of 1155055493 in words is "one billion, one hundred fifty-five million, fifty-five thousand, four hundred ninety-three".