4001520315 has 24 divisors (see below), whose sum is σ = 6932815920. Its totient is φ = 1969977984.

The previous prime is 4001520301. The next prime is 4001520319. The reversal of 4001520315 is 5130251004.

It is not a de Polignac number, because 4001520315 - 2⁵ = 4001520283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4001520291 and 4001520300.

It is not an unprimeable number, because it can be changed into a prime (4001520319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786720 + ... + 791789.

It is an arithmetic number, because the mean of its divisors is an integer number (288867330).

Almost surely, 2^4001520315 is an apocalyptic number.

4001520315 is a deficient number, since it is larger than the sum of its proper divisors (2931295605).

4001520315 is a wasteful number, since it uses less digits than its factorization.

4001520315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578543 (or 1578530 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 4001520315 is about 63257.5712069314. The cubic root of 4001520315 is about 1587.6021389632.

Adding to 4001520315 its reverse (5130251004), we get a palindrome (9131771319).

The spelling of 4001520315 in words is "four billion, one million, five hundred twenty thousand, three hundred fifteen".