1125541 has 4 divisors (see below), whose sum is σ = 1184800. Its totient is φ = 1066284.

The previous prime is 1125539. The next prime is 1125557. The reversal of 1125541 is 1455211.

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 1125541 - 2¹ = 1125539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 59239 = 1125541 / (1 + 1 + 2 + 5 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125571) 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, 29601 + ... + 29638.

It is an arithmetic number, because the mean of its divisors is an integer number (296200).

2^1125541 is an apocalyptic number.

It is an amenable number.

1125541 is a deficient number, since it is larger than the sum of its proper divisors (59259).

1125541 is an equidigital number, since it uses as much as digits as its factorization.

1125541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59258.

The product of its digits is 200, while the sum is 19.

The square root of 1125541 is about 1060.9151709727. The cubic root of 1125541 is about 104.0208599676.

It can be divided in two parts, 11 and 25541, that added together give a palindrome (25552).

The spelling of 1125541 in words is "one million, one hundred twenty-five thousand, five hundred forty-one".