1145535321 has 8 divisors (see below), whose sum is σ = 1745577664. Its totient is φ = 654591600.

The previous prime is 1145535319. The next prime is 1145535329. The reversal of 1145535321 is 1235355411.

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

It is not a de Polignac number, because 1145535321 - 2¹ = 1145535319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145535329) 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, 27274630 + ... + 27274671.

It is an arithmetic number, because the mean of its divisors is an integer number (218197208).

Almost surely, 2^1145535321 is an apocalyptic number.

It is an amenable number.

1145535321 is a deficient number, since it is larger than the sum of its proper divisors (600042343).

1145535321 is an equidigital number, since it uses as much as digits as its factorization.

1145535321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54549311.

The product of its digits is 9000, while the sum is 30.

The square root of 1145535321 is about 33845.7577991689. The cubic root of 1145535321 is about 1046.3319694146.

The spelling of 1145535321 in words is "one billion, one hundred forty-five million, five hundred thirty-five thousand, three hundred twenty-one".