255690293 has 8 divisors (see below), whose sum is σ = 261626112. Its totient is φ = 249775216.

The previous prime is 255690271. The next prime is 255690307. The reversal of 255690293 is 392096552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255690293 - 2⁶ = 255690229 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 255690293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255692293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21296 + ... + 31062.

It is an arithmetic number, because the mean of its divisors is an integer number (32703264).

Almost surely, 2^255690293 is an apocalyptic number.

It is an amenable number.

255690293 is a deficient number, since it is larger than the sum of its proper divisors (5935819).

255690293 is an equidigital number, since it uses as much as digits as its factorization.

255690293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 255690293 is about 15990.3187272800. The cubic root of 255690293 is about 634.7042605750.

The spelling of 255690293 in words is "two hundred fifty-five million, six hundred ninety thousand, two hundred ninety-three".