1452311521 has 4 divisors (see below), whose sum is σ = 1452396292. Its totient is φ = 1452226752.

The previous prime is 1452311501. The next prime is 1452311527. The reversal of 1452311521 is 1251132541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 742835025 + 709476496 = 27255^2 + 26636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1452311521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1452311527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6636 + ... + 54301.

It is an arithmetic number, because the mean of its divisors is an integer number (363099073).

Almost surely, 2^1452311521 is an apocalyptic number.

It is an amenable number.

1452311521 is a deficient number, since it is larger than the sum of its proper divisors (84771).

1452311521 is an equidigital number, since it uses as much as digits as its factorization.

1452311521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84770.

The product of its digits is 1200, while the sum is 25.

The square root of 1452311521 is about 38109.2052003187. The cubic root of 1452311521 is about 1132.4523244179.

The spelling of 1452311521 in words is "one billion, four hundred fifty-two million, three hundred eleven thousand, five hundred twenty-one".