1055817 has 12 divisors (see below), whose sum is σ = 1743040. Its totient is φ = 603288.

The previous prime is 1055809. The next prime is 1055827. The reversal of 1055817 is 7185501.

It is not a de Polignac number, because 1055817 - 2³ = 1055809 is a prime.

It is a super-2 number, since 2×1055817² = 2229499074978, which contains 22 as substring.

It is a Duffinian number.

1055817 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1055827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8317 + ... + 8442.

2^1055817 is an apocalyptic number.

It is an amenable number.

1055817 is a deficient number, since it is larger than the sum of its proper divisors (687223).

1055817 is a wasteful number, since it uses less digits than its factorization.

1055817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16772 (or 16769 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 1055817 is about 1027.5295616185. The cubic root of 1055817 is about 101.8269846623.

The spelling of 1055817 in words is "one million, fifty-five thousand, eight hundred seventeen".