1055604 has 36 divisors (see below), whose sum is σ = 2711072. Its totient is φ = 319440.

The previous prime is 1055603. The next prime is 1055609. The reversal of 1055604 is 4065501.

It is a happy number.

It is a super-2 number, since 2×1055604² = 2228599609632, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055603) 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, 1089 + ... + 1815.

2^1055604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355536).

1055604 is an abundant number, since it is smaller than the sum of its proper divisors (1655468).

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

1055604 is a wasteful number, since it uses less digits than its factorization.

1055604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1055604 is about 1027.4259097375. The cubic root of 1055604 is about 101.8201366933.

The spelling of 1055604 in words is "one million, fifty-five thousand, six hundred four".