1055406 has 16 divisors (see below), whose sum is σ = 2302848. Its totient is φ = 319800.

The previous prime is 1055399. The next prime is 1055407. The reversal of 1055406 is 6045501.

It is a happy number.

It is a super-2 number, since 2×1055406² = 2227763649672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7930 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (143928).

2^1055406 is an apocalyptic number.

1055406 is an abundant number, since it is smaller than the sum of its proper divisors (1247442).

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

1055406 is a wasteful number, since it uses less digits than its factorization.

1055406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16007.

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

The square root of 1055406 is about 1027.3295479056. The cubic root of 1055406 is about 101.8137701494.

The spelling of 1055406 in words is "one million, fifty-five thousand, four hundred six".