1121575 has 48 divisors (see below), whose sum is σ = 1874880. Its totient is φ = 645120.

The previous prime is 1121557. The next prime is 1121599. The reversal of 1121575 is 5751211.

It is not a de Polignac number, because 1121575 - 2⁵ = 1121543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38661 + ... + 38689.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2^1121575 is an apocalyptic number.

1121575 is a deficient number, since it is larger than the sum of its proper divisors (753305).

1121575 is a wasteful number, since it uses less digits than its factorization.

1121575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 71 counting only the distinct ones).

The product of its digits is 350, while the sum is 22.

The square root of 1121575 is about 1059.0443805620. The cubic root of 1121575 is about 103.8985388685.

Adding to 1121575 its reverse (5751211), we get a palindrome (6872786).

It can be divided in two parts, 112 and 1575, that multiplied together give a square (176400 = 420²).

The spelling of 1121575 in words is "one million, one hundred twenty-one thousand, five hundred seventy-five".