1043553 has 24 divisors (see below), whose sum is σ = 1678080. Its totient is φ = 574560.

The previous prime is 1043543. The next prime is 1043557. The reversal of 1043553 is 3553401.

It is not a de Polignac number, because 1043553 - 2⁵ = 1043521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1043557) 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, 4443 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (69920).

2^1043553 is an apocalyptic number.

It is an amenable number.

1043553 is a deficient number, since it is larger than the sum of its proper divisors (634527).

1043553 is a wasteful number, since it uses less digits than its factorization.

1043553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 1043553 is about 1021.5444190049. The cubic root of 1043553 is about 101.4311860162.

Adding to 1043553 its reverse (3553401), we get a palindrome (4596954).

It can be divided in two parts, 1043 and 553, that added together give a triangular number (1596 = T₅₆).

The spelling of 1043553 in words is "one million, forty-three thousand, five hundred fifty-three".