1125558 has 24 divisors (see below), whose sum is σ = 2787408. Its totient is φ = 321552.

The previous prime is 1125557. The next prime is 1125559. The reversal of 1125558 is 8555211.

It is an interprime number because it is at equal distance from previous prime (1125557) and next prime (1125559).

It is a super-3 number, since 3×1125558³ = 4277843496831723336, which contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (1125557) 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, 4341 + ... + 4592.

It is an arithmetic number, because the mean of its divisors is an integer number (116142).

2^1125558 is an apocalyptic number.

1125558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1125558 is an abundant number, since it is smaller than the sum of its proper divisors (1661850).

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

1125558 is a wasteful number, since it uses less digits than its factorization.

1125558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948 (or 8945 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1125558 is about 1060.9231828931. The cubic root of 1125558 is about 104.0213836700.

The spelling of 1125558 in words is "one million, one hundred twenty-five thousand, five hundred fifty-eight".