255919073 has 4 divisors (see below), whose sum is σ = 257398548. Its totient is φ = 254439600.

The previous prime is 255919063. The next prime is 255919099. The reversal of 255919073 is 370919552.

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 220730449 + 35188624 = 14857^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 255919073 - 2⁴ = 255919057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255919073.

It is not an unprimeable number, because it can be changed into a prime (255919063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739478 + ... + 739823.

It is an arithmetic number, because the mean of its divisors is an integer number (64349637).

Almost surely, 2^255919073 is an apocalyptic number.

It is an amenable number.

255919073 is a deficient number, since it is larger than the sum of its proper divisors (1479475).

255919073 is a wasteful number, since it uses less digits than its factorization.

255919073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479474.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 255919073 is about 15997.4708313533. The cubic root of 255919073 is about 634.8935056081.

The spelling of 255919073 in words is "two hundred fifty-five million, nine hundred nineteen thousand, seventy-three".