1156535055 has 24 divisors (see below), whose sum is σ = 2158866528. Its totient is φ = 569370816.

The previous prime is 1156535027. The next prime is 1156535057. The reversal of 1156535055 is 5505356511.

1156535055 is a `hidden beast` number, since 11 + 565 + 35 + 0 + 55 = 666.

It is not a de Polignac number, because 1156535055 - 2⁶ = 1156534991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156535057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 987907 + ... + 989076.

It is an arithmetic number, because the mean of its divisors is an integer number (89952772).

Almost surely, 2^1156535055 is an apocalyptic number.

1156535055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1156535055 is a deficient number, since it is larger than the sum of its proper divisors (1002331473).

1156535055 is a wasteful number, since it uses less digits than its factorization.

1156535055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977007 (or 1977004 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 36.

The square root of 1156535055 is about 34007.8675456136. The cubic root of 1156535055 is about 1049.6703591072.

The spelling of 1156535055 in words is "one billion, one hundred fifty-six million, five hundred thirty-five thousand, fifty-five".