255640170 has 32 divisors (see below), whose sum is σ = 640213632. Its totient is φ = 65206592.

The previous prime is 255640157. The next prime is 255640181. The reversal of 255640170 is 71046552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184557 + ... + 185936.

It is an arithmetic number, because the mean of its divisors is an integer number (20006676).

Almost surely, 2^255640170 is an apocalyptic number.

255640170 is an abundant number, since it is smaller than the sum of its proper divisors (384573462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255640170 is a wasteful number, since it uses less digits than its factorization.

255640170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370526.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 255640170 is about 15988.7513583769. The cubic root of 255640170 is about 634.6627841463.

The spelling of 255640170 in words is "two hundred fifty-five million, six hundred forty thousand, one hundred seventy".