1130521 has 4 divisors (see below), whose sum is σ = 1292032. Its totient is φ = 969012.

The previous prime is 1130501. The next prime is 1130527. The reversal of 1130521 is 1250311.

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: 1250311 = 43 ⋅29077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130521 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1130527) 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, 80745 + ... + 80758.

It is an arithmetic number, because the mean of its divisors is an integer number (323008).

2^1130521 is an apocalyptic number.

It is an amenable number.

1130521 is a deficient number, since it is larger than the sum of its proper divisors (161511).

1130521 is an equidigital number, since it uses as much as digits as its factorization.

1130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161510.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1130521 is about 1063.2596108195. The cubic root of 1130521 is about 104.1740490412.

Adding to 1130521 its reverse (1250311), we get a palindrome (2380832).

The spelling of 1130521 in words is "one million, one hundred thirty thousand, five hundred twenty-one".