1131550521 has 8 divisors (see below), whose sum is σ = 1540834944. Its totient is φ = 738316560.

The previous prime is 1131550463. The next prime is 1131550523. The reversal of 1131550521 is 1250551311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131550521 - 2⁶ = 1131550457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131550491 and 1131550500.

It is not an unprimeable number, because it can be changed into a prime (1131550523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4012450 + ... + 4012731.

It is an arithmetic number, because the mean of its divisors is an integer number (192604368).

Almost surely, 2^1131550521 is an apocalyptic number.

It is an amenable number.

1131550521 is a deficient number, since it is larger than the sum of its proper divisors (409284423).

1131550521 is an equidigital number, since it uses as much as digits as its factorization.

1131550521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025231.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1131550521 is about 33638.5273310233. The cubic root of 1131550521 is about 1042.0566184975.

The spelling of 1131550521 in words is "one billion, one hundred thirty-one million, five hundred fifty thousand, five hundred twenty-one".