1056209 has 24 divisors (see below), whose sum is σ = 1404480. Its totient is φ = 776160.

The previous prime is 1056203. The next prime is 1056217. The reversal of 1056209 is 9026501.

It is not a de Polignac number, because 1056209 - 2¹⁶ = 990673 is a prime.

It is a super-2 number, since 2×1056209² = 2231154903362, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24542 + ... + 24584.

It is an arithmetic number, because the mean of its divisors is an integer number (58520).

2^1056209 is an apocalyptic number.

It is an amenable number.

1056209 is a deficient number, since it is larger than the sum of its proper divisors (348271).

1056209 is a wasteful number, since it uses less digits than its factorization.

1056209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1056209 is about 1027.7202926867. The cubic root of 1056209 is about 101.8395850906.

The spelling of 1056209 in words is "one million, fifty-six thousand, two hundred nine".