1255558 has 24 divisors (see below), whose sum is σ = 2084832. Its totient is φ = 566352.

The previous prime is 1255549. The next prime is 1255559. The reversal of 1255558 is 8555521.

It is a super-3 number, since 3×1255558³ = 5937882417927603336, which contains 333 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26691 + ... + 26737.

It is an arithmetic number, because the mean of its divisors is an integer number (86868).

2^1255558 is an apocalyptic number.

1255558 is a deficient number, since it is larger than the sum of its proper divisors (829274).

1255558 is a wasteful number, since it uses less digits than its factorization.

1255558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 105 counting only the distinct ones).

The product of its digits is 10000, while the sum is 31.

The square root of 1255558 is about 1120.5168450318. The cubic root of 1255558 is about 107.8811564234.

The spelling of 1255558 in words is "one million, two hundred fifty-five thousand, five hundred fifty-eight".