255720170 has 16 divisors (see below), whose sum is σ = 461220480. Its totient is φ = 102082704.

The previous prime is 255720149. The next prime is 255720191. The reversal of 255720170 is 71027552.

It is an interprime number because it is at equal distance from previous prime (255720149) and next prime (255720191).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20390 + ... + 30449.

It is an arithmetic number, because the mean of its divisors is an integer number (28826280).

Almost surely, 2^255720170 is an apocalyptic number.

255720170 is a deficient number, since it is larger than the sum of its proper divisors (205500310).

255720170 is a wasteful number, since it uses less digits than its factorization.

255720170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51349.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 255720170 is about 15991.2529215193. The cubic root of 255720170 is about 634.7289810033.

The spelling of 255720170 in words is "two hundred fifty-five million, seven hundred twenty thousand, one hundred seventy".