320255145 has 48 divisors (see below), whose sum is σ = 638706432. Its totient is φ = 145411200.

The previous prime is 320255137. The next prime is 320255171. The reversal of 320255145 is 541552023.

It is a happy number.

It is not a de Polignac number, because 320255145 - 2³ = 320255137 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44199 + ... + 50931.

It is an arithmetic number, because the mean of its divisors is an integer number (13306384).

Almost surely, 2^320255145 is an apocalyptic number.

320255145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320255145 is a deficient number, since it is larger than the sum of its proper divisors (318451287).

320255145 is a wasteful number, since it uses less digits than its factorization.

320255145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902 (or 6899 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 320255145 is about 17895.6739185760. The cubic root of 320255145 is about 684.1721186325.

It can be divided in two parts, 320255 and 145, that added together give a triangular number (320400 = T₈₀₀).

The spelling of 320255145 in words is "three hundred twenty million, two hundred fifty-five thousand, one hundred forty-five".