1485585221 has 4 divisors (see below), whose sum is σ = 1488636192. Its totient is φ = 1482534252.

The previous prime is 1485585209. The next prime is 1485585223. The reversal of 1485585221 is 1225855841.

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: 1225855841 = 7 ⋅175122263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1485585221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485585223) 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, 1524755 + ... + 1525728.

It is an arithmetic number, because the mean of its divisors is an integer number (372159048).

Almost surely, 2^1485585221 is an apocalyptic number.

It is an amenable number.

1485585221 is a deficient number, since it is larger than the sum of its proper divisors (3050971).

1485585221 is an equidigital number, since it uses as much as digits as its factorization.

1485585221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050970.

The product of its digits is 128000, while the sum is 41.

The square root of 1485585221 is about 38543.2902202186. The cubic root of 1485585221 is about 1141.0355884203.

The spelling of 1485585221 in words is "one billion, four hundred eighty-five million, five hundred eighty-five thousand, two hundred twenty-one".