611059081 has 4 divisors (see below), whose sum is σ = 612260100. Its totient is φ = 609858064.

The previous prime is 611059069. The next prime is 611059091. The reversal of 611059081 is 180950116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 420619081 + 190440000 = 20509^2 + 13800^2 .

It is a cyclic number.

It is not a de Polignac number, because 611059081 - 2⁵ = 611059049 is a prime.

It is a super-2 number, since 2×611059081² = 746786400945129122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611059091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599746 + ... + 600763.

It is an arithmetic number, because the mean of its divisors is an integer number (153065025).

Almost surely, 2^611059081 is an apocalyptic number.

It is an amenable number.

611059081 is a deficient number, since it is larger than the sum of its proper divisors (1201019).

611059081 is a wasteful number, since it uses less digits than its factorization.

611059081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201018.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 611059081 is about 24719.6092404391. The cubic root of 611059081 is about 848.5831440685.

The spelling of 611059081 in words is "six hundred eleven million, fifty-nine thousand, eighty-one".