4315442521 has 4 divisors (see below), whose sum is σ = 4647399652. Its totient is φ = 3983485392.

The previous prime is 4315442501. The next prime is 4315442539. The reversal of 4315442521 is 1252445134.

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 223921296 + 4091521225 = 14964^2 + 63965^2 .

It is a cyclic number.

It is not a de Polignac number, because 4315442521 - 2²¹ = 4313345369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4315442501) 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, 165978546 + ... + 165978571.

It is an arithmetic number, because the mean of its divisors is an integer number (1161849913).

Almost surely, 2^4315442521 is an apocalyptic number.

It is an amenable number.

4315442521 is a deficient number, since it is larger than the sum of its proper divisors (331957131).

4315442521 is a wasteful number, since it uses less digits than its factorization.

4315442521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331957130.

The product of its digits is 19200, while the sum is 31.

The square root of 4315442521 is about 65692.0278344336. The cubic root of 4315442521 is about 1628.0776415239.

Adding to 4315442521 its reverse (1252445134), we get a palindrome (5567887655).

The spelling of 4315442521 in words is "four billion, three hundred fifteen million, four hundred forty-two thousand, five hundred twenty-one".