255581442 has 12 divisors (see below), whose sum is σ = 553759830. Its totient is φ = 85193808.

The previous prime is 255581411. The next prime is 255581461. The reversal of 255581442 is 244185552.

It can be written as a sum of positive squares in only one way, i.e., 254434401 + 1147041 = 15951^2 + 1071^2 .

It is a junction number, because it is equal to n+sod(n) for n = 255581397 and 255581406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7099467 + ... + 7099502.

Almost surely, 2^255581442 is an apocalyptic number.

255581442 is an abundant number, since it is smaller than the sum of its proper divisors (298178388).

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

255581442 is a wasteful number, since it uses less digits than its factorization.

255581442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198977 (or 14198974 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 255581442 is about 15986.9147117260. The cubic root of 255581442 is about 634.6141802427.

It can be divided in two parts, 25558 and 1442, that added together give a cube (27000 = 30³).

The spelling of 255581442 in words is "two hundred fifty-five million, five hundred eighty-one thousand, four hundred forty-two".