1165445055 has 24 divisors (see below), whose sum is σ = 2074705152. Its totient is φ = 604770624.

The previous prime is 1165445027. The next prime is 1165445089. The reversal of 1165445055 is 5505445611.

1165445055 is a `hidden beast` number, since 1 + 16 + 544 + 50 + 55 = 666.

It is not a de Polignac number, because 1165445055 - 2⁵ = 1165445023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348319 + ... + 351648.

It is an arithmetic number, because the mean of its divisors is an integer number (86446048).

Almost surely, 2^1165445055 is an apocalyptic number.

1165445055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1165445055 is a deficient number, since it is larger than the sum of its proper divisors (909260097).

1165445055 is a wasteful number, since it uses less digits than its factorization.

1165445055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700015 (or 700012 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 1165445055 is about 34138.6153058381. The cubic root of 1165445055 is about 1052.3590361179.

The spelling of 1165445055 in words is "one billion, one hundred sixty-five million, four hundred forty-five thousand, fifty-five".