1055550 has 48 divisors (see below), whose sum is σ = 2714112. Its totient is φ = 271200.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055550 is 555501.

It is a super-2 number, since 2×1055550² = 2228371605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4537 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (56544).

2^1055550 is an apocalyptic number.

1055550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357056).

1055550 is an abundant number, since it is smaller than the sum of its proper divisors (1658562).

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

1055550 is a wasteful number, since it uses less digits than its factorization.

1055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 1055550 is about 1027.3996301343. The cubic root of 1055550 is about 101.8184004421.

The spelling of 1055550 in words is "one million, fifty-five thousand, five hundred fifty".