1611150055 has 4 divisors (see below), whose sum is σ = 1933380072. Its totient is φ = 1288920040.

The previous prime is 1611150043. The next prime is 1611150097. The reversal of 1611150055 is 5500511161.

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

It is not a de Polignac number, because 1611150055 - 2²¹ = 1609052903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161115001 + ... + 161115010.

It is an arithmetic number, because the mean of its divisors is an integer number (483345018).

Almost surely, 2^1611150055 is an apocalyptic number.

1611150055 is a deficient number, since it is larger than the sum of its proper divisors (322230017).

1611150055 is an equidigital number, since it uses as much as digits as its factorization.

1611150055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322230016.

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 1611150055 is about 40139.1337101338. The cubic root of 1611150055 is about 1172.3177216290.

It can be divided in two parts, 16111 and 50055, that added together give a palindrome (66166).

The spelling of 1611150055 in words is "one billion, six hundred eleven million, one hundred fifty thousand, fifty-five".