1085184521 has 4 divisors (see below), whose sum is σ = 1088719632. Its totient is φ = 1081649412.

The previous prime is 1085184497. The next prime is 1085184523. The reversal of 1085184521 is 1254815801.

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: 1254815801 = 1301 ⋅964501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085184521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085184523) 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, 1767095 + ... + 1767708.

It is an arithmetic number, because the mean of its divisors is an integer number (272179908).

Almost surely, 2^1085184521 is an apocalyptic number.

It is an amenable number.

1085184521 is a deficient number, since it is larger than the sum of its proper divisors (3535111).

1085184521 is an equidigital number, since it uses as much as digits as its factorization.

1085184521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535110.

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1085184521 is about 32942.1389864107. The cubic root of 1085184521 is about 1027.6246898287.

The spelling of 1085184521 in words is "one billion, eighty-five million, one hundred eighty-four thousand, five hundred twenty-one".