255561422 has 4 divisors (see below), whose sum is σ = 383342136. Its totient is φ = 127780710.

The previous prime is 255561413. The next prime is 255561433. The reversal of 255561422 is 224165552.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63890354 + ... + 63890357.

It is an arithmetic number, because the mean of its divisors is an integer number (95835534).

Almost surely, 2^255561422 is an apocalyptic number.

255561422 is a deficient number, since it is larger than the sum of its proper divisors (127780714).

255561422 is a wasteful number, since it uses less digits than its factorization.

255561422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127780713.

The product of its digits is 24000, while the sum is 32.

The square root of 255561422 is about 15986.2885623900. The cubic root of 255561422 is about 634.5976097808.

The spelling of 255561422 in words is "two hundred fifty-five million, five hundred sixty-one thousand, four hundred twenty-two".