3081550145 has 4 divisors (see below), whose sum is σ = 3697860180. Its totient is φ = 2465240112.

The previous prime is 3081550141. The next prime is 3081550183. The reversal of 3081550145 is 5410551803.

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 979877809 + 2101672336 = 31303^2 + 45844^2 .

It is a cyclic number.

It is not a de Polignac number, because 3081550145 - 2² = 3081550141 is a prime.

It is a super-2 number, since 2×3081550145² = 18991902592299042050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3081550141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308155010 + ... + 308155019.

It is an arithmetic number, because the mean of its divisors is an integer number (924465045).

Almost surely, 2^3081550145 is an apocalyptic number.

It is an amenable number.

3081550145 is a deficient number, since it is larger than the sum of its proper divisors (616310035).

3081550145 is an equidigital number, since it uses as much as digits as its factorization.

3081550145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616310034.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 3081550145 is about 55511.7117822897. The cubic root of 3081550145 is about 1455.2013191595.

The spelling of 3081550145 in words is "three billion, eighty-one million, five hundred fifty thousand, one hundred forty-five".