1055558 has 12 divisors (see below), whose sum is σ = 1842012. Its totient is φ = 452340.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055558 is 8555501.

It is a super-3 number, since 3×1055558³ = 3528316693472403336, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1055558.

It is a congruent number.

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, 5288 + ... + 5483.

It is an arithmetic number, because the mean of its divisors is an integer number (153501).

2^1055558 is an apocalyptic number.

1055558 is a deficient number, since it is larger than the sum of its proper divisors (786454).

1055558 is a wasteful number, since it uses less digits than its factorization.

1055558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787 (or 10780 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 1055558 is about 1027.4035234512. The cubic root of 1055558 is about 101.8186576682.

The spelling of 1055558 in words is "one million, fifty-five thousand, five hundred fifty-eight".