1481521 has 4 divisors (see below), whose sum is σ = 1529344. Its totient is φ = 1433700.

The previous prime is 1481503. The next prime is 1481527. The reversal of 1481521 is 1251841.

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.

It is a cyclic number.

It is not a de Polignac number, because 1481521 - 2⁵ = 1481489 is a prime.

It is a Duffinian number.

1481521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1481492 and 1481501.

It is not an unprimeable number, because it can be changed into a prime (1481527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23865 + ... + 23926.

It is an arithmetic number, because the mean of its divisors is an integer number (382336).

2^1481521 is an apocalyptic number.

It is an amenable number.

1481521 is a deficient number, since it is larger than the sum of its proper divisors (47823).

1481521 is an equidigital number, since it uses as much as digits as its factorization.

1481521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47822.

The product of its digits is 320, while the sum is 22.

The square root of 1481521 is about 1217.1774726801. The cubic root of 1481521 is about 113.9994100718. Note that the first 3 decimals are identical.

Adding to 1481521 its product of digits (320), we get a palindrome (1481841).

It can be divided in two parts, 1481 and 521, that added together give a palindrome (2002).

The spelling of 1481521 in words is "one million, four hundred eighty-one thousand, five hundred twenty-one".