255561270 has 16 divisors (see below), whose sum is σ = 613347120. Its totient is φ = 68149664.

The previous prime is 255561263. The next prime is 255561277. The reversal of 255561270 is 72165552.

It is an interprime number because it is at equal distance from previous prime (255561263) and next prime (255561277).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255561277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4259325 + ... + 4259384.

It is an arithmetic number, because the mean of its divisors is an integer number (38334195).

Almost surely, 2^255561270 is an apocalyptic number.

255561270 is an abundant number, since it is smaller than the sum of its proper divisors (357785850).

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

255561270 is a wasteful number, since it uses less digits than its factorization.

255561270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518719.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 255561270 is about 15986.2838083152. The cubic root of 255561270 is about 634.5974839678.

The spelling of 255561270 in words is "two hundred fifty-five million, five hundred sixty-one thousand, two hundred seventy".