1155550101 has 16 divisors (see below), whose sum is σ = 1563468480. Its totient is φ = 759059840.

The previous prime is 1155550087. The next prime is 1155550117. The reversal of 1155550101 is 1010555511.

It is a cyclic number.

It is not a de Polignac number, because 1155550101 - 2⁷ = 1155549973 is a prime.

It is a super-2 number, since 2×1155550101² = 2670592071842220402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155550001) 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, 70846 + ... + 85616.

It is an arithmetic number, because the mean of its divisors is an integer number (97716780).

Almost surely, 2^1155550101 is an apocalyptic number.

It is an amenable number.

1155550101 is a deficient number, since it is larger than the sum of its proper divisors (407918379).

1155550101 is a wasteful number, since it uses less digits than its factorization.

1155550101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 1155550101 is about 33993.3831943806. The cubic root of 1155550101 is about 1049.3722933025.

The spelling of 1155550101 in words is "one billion, one hundred fifty-five million, five hundred fifty thousand, one hundred one".