1055553 has 4 divisors (see below), whose sum is σ = 1407408. Its totient is φ = 703700.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055553 is 3555501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1055553 - 2⁶ = 1055489 is a prime.

It is a super-2 number, since 2×1055553² = 2228384271618, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

1055553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1055503) 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 3 ways as a sum of consecutive naturals, for example, 175923 + ... + 175928.

It is an arithmetic number, because the mean of its divisors is an integer number (351852).

2^1055553 is an apocalyptic number.

It is an amenable number.

1055553 is a deficient number, since it is larger than the sum of its proper divisors (351855).

1055553 is an equidigital number, since it uses as much as digits as its factorization.

1055553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351854.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 1055553 is about 1027.4010901298. The cubic root of 1055553 is about 101.8184969020.

The spelling of 1055553 in words is "one million, fifty-five thousand, five hundred fifty-three".