1055565 has 32 divisors (see below), whose sum is σ = 2146560. Its totient is φ = 482112.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055565 is 5655501.

1055565 is a `hidden beast` number, since 105 + 556 + 5 = 666.

It is not a de Polignac number, because 1055565 - 2⁶ = 1055501 is a prime.

It is a super-2 number, since 2×1055565² = 2228434938450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387 + ... + 1503.

It is an arithmetic number, because the mean of its divisors is an integer number (67080).

2^1055565 is an apocalyptic number.

1055565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055565 is an abundant number, since it is smaller than the sum of its proper divisors (1090995).

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

1055565 is a wasteful number, since it uses less digits than its factorization.

1055565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1055565 is about 1027.4069300915. The cubic root of 1055565 is about 101.8188827400.

The spelling of 1055565 in words is "one million, fifty-five thousand, five hundred sixty-five".