1130533561 has 4 divisors (see below), whose sum is σ = 1131277392. Its totient is φ = 1129789732.

The previous prime is 1130533517. The next prime is 1130533567. The reversal of 1130533561 is 1653350311.

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 1130533561 - 2¹³ = 1130525369 is a prime.

It is a super-2 number, since 2×1130533561² = 2556212265094681442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130533567) 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, 369631 + ... + 372676.

It is an arithmetic number, because the mean of its divisors is an integer number (282819348).

Almost surely, 2^1130533561 is an apocalyptic number.

It is an amenable number.

1130533561 is a deficient number, since it is larger than the sum of its proper divisors (743831).

1130533561 is an equidigital number, since it uses as much as digits as its factorization.

1130533561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743830.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 1130533561 is about 33623.4079325698. The cubic root of 1130533561 is about 1041.7443485904.

Adding to 1130533561 its reverse (1653350311), we get a palindrome (2783883872).

The spelling of 1130533561 in words is "one billion, one hundred thirty million, five hundred thirty-three thousand, five hundred sixty-one".