731161055 has 4 divisors (see below), whose sum is σ = 877393272. Its totient is φ = 584928840.

The previous prime is 731161051. The next prime is 731161063. The reversal of 731161055 is 550161137.

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

It is not a de Polignac number, because 731161055 - 2² = 731161051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731161051) 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, 73116101 + ... + 73116110.

It is an arithmetic number, because the mean of its divisors is an integer number (219348318).

Almost surely, 2^731161055 is an apocalyptic number.

731161055 is a deficient number, since it is larger than the sum of its proper divisors (146232217).

731161055 is a wasteful number, since it uses less digits than its factorization.

731161055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146232216.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 731161055 is about 27039.9899223354. The cubic root of 731161055 is about 900.8884457169. Note that the first 3 decimals are identical.

The spelling of 731161055 in words is "seven hundred thirty-one million, one hundred sixty-one thousand, fifty-five".