1155107061 has 14 divisors (see below), whose sum is σ = 1731869430. Its totient is φ = 770070888.

The previous prime is 1155107047. The next prime is 1155107077. The reversal of 1155107061 is 1607015511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1067328900 + 87778161 = 32670^2 + 9369^2 .

It is not a de Polignac number, because 1155107061 - 2⁵ = 1155107029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155107761) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 791526 + ... + 792983.

Almost surely, 2^1155107061 is an apocalyptic number.

It is an amenable number.

1155107061 is a deficient number, since it is larger than the sum of its proper divisors (576762369).

1155107061 is an frugal number, since it uses more digits than its factorization.

1155107061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584527 (or 1584512 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

The square root of 1155107061 is about 33986.8660073270. The cubic root of 1155107061 is about 1049.2381657473.

The spelling of 1155107061 in words is "one billion, one hundred fifty-five million, one hundred seven thousand, sixty-one".