1156610055 has 16 divisors (see below), whose sum is σ = 1869656544. Its totient is φ = 610498560.

The previous prime is 1156610053. The next prime is 1156610069. The reversal of 1156610055 is 5500166511.

It is not a de Polignac number, because 1156610055 - 2¹ = 1156610053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156610053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396006 + ... + 398915.

It is an arithmetic number, because the mean of its divisors is an integer number (116853534).

Almost surely, 2^1156610055 is an apocalyptic number.

1156610055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1156610055 is a deficient number, since it is larger than the sum of its proper divisors (713046489).

1156610055 is an equidigital number, since it uses as much as digits as its factorization.

1156610055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795026.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1156610055 is about 34008.9702137539. The cubic root of 1156610055 is about 1049.6930485982.

Adding to 1156610055 its reverse (5500166511), we get a palindrome (6656776566).

The spelling of 1156610055 in words is "one billion, one hundred fifty-six million, six hundred ten thousand, fifty-five".