1155005501 has 16 divisors (see below), whose sum is σ = 1253441280. Its totient is φ = 1057976640.

The previous prime is 1155005479. The next prime is 1155005519. The reversal of 1155005501 is 1055005511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1155005501 - 2²² = 1150811197 is a prime.

It is a super-2 number, since 2×1155005501² = 2668075414680522002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155005581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307606 + ... + 1308488.

It is an arithmetic number, because the mean of its divisors is an integer number (78340080).

Almost surely, 2^1155005501 is an apocalyptic number.

It is an amenable number.

1155005501 is a deficient number, since it is larger than the sum of its proper divisors (98435779).

1155005501 is a wasteful number, since it uses less digits than its factorization.

1155005501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 1155005501 is about 33985.3718679081. The cubic root of 1155005501 is about 1049.2074142684.

The spelling of 1155005501 in words is "one billion, one hundred fifty-five million, five thousand, five hundred one".