1480221521 has 4 divisors (see below), whose sum is σ = 1482636852. Its totient is φ = 1477806192.

The previous prime is 1480221503. The next prime is 1480221527. The reversal of 1480221521 is 1251220841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 530657296 + 949564225 = 23036^2 + 30815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1480221521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1480221527) 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, 1206746 + ... + 1207971.

It is an arithmetic number, because the mean of its divisors is an integer number (370659213).

Almost surely, 2^1480221521 is an apocalyptic number.

It is an amenable number.

1480221521 is a deficient number, since it is larger than the sum of its proper divisors (2415331).

1480221521 is an equidigital number, since it uses as much as digits as its factorization.

1480221521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415330.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1480221521 is about 38473.6470977213. The cubic root of 1480221521 is about 1139.6606974729.

The spelling of 1480221521 in words is "one billion, four hundred eighty million, two hundred twenty-one thousand, five hundred twenty-one".