1125161 has 4 divisors (see below), whose sum is σ = 1184400. Its totient is φ = 1065924.

The previous prime is 1125151. The next prime is 1125167. The reversal of 1125161 is 1615211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1615211 = 13 ⋅124247.

It is a cyclic number.

It is not a de Polignac number, because 1125161 - 2⁶ = 1125097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125167) 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, 29591 + ... + 29628.

It is an arithmetic number, because the mean of its divisors is an integer number (296100).

2^1125161 is an apocalyptic number.

It is an amenable number.

1125161 is a deficient number, since it is larger than the sum of its proper divisors (59239).

1125161 is an equidigital number, since it uses as much as digits as its factorization.

1125161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59238.

The product of its digits is 60, while the sum is 17.

The square root of 1125161 is about 1060.7360651925. The cubic root of 1125161 is about 104.0091523011.

The spelling of 1125161 in words is "one million, one hundred twenty-five thousand, one hundred sixty-one".