1043551 has 4 divisors (see below), whose sum is σ = 1049152. Its totient is φ = 1037952.

The previous prime is 1043543. The next prime is 1043557. The reversal of 1043551 is 1553401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1043551 - 2³ = 1043543 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2511 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (262288).

2^1043551 is an apocalyptic number.

1043551 is a deficient number, since it is larger than the sum of its proper divisors (5601).

1043551 is an equidigital number, since it uses as much as digits as its factorization.

1043551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1043551 is about 1021.5434400944. The cubic root of 1043551 is about 101.4311212176.

Adding to 1043551 its reverse (1553401), we get a palindrome (2596952).

It can be divided in two parts, 104 and 3551, that added together give a triangular number (3655 = T₈₅).

The spelling of 1043551 in words is "one million, forty-three thousand, five hundred fifty-one".