4006520523 has 32 divisors (see below), whose sum is σ = 5990829120. Its totient is φ = 2646259200.

The previous prime is 4006520459. The next prime is 4006520561. The reversal of 4006520523 is 3250256004.

4006520523 is a `hidden beast` number, since 4 + 0 + 0 + 652 + 0 + 5 + 2 + 3 = 666.

It is not a de Polignac number, because 4006520523 - 2⁶ = 4006520459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4006528523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1698661 + ... + 1701017.

It is an arithmetic number, because the mean of its divisors is an integer number (187213410).

Almost surely, 2^4006520523 is an apocalyptic number.

4006520523 is a deficient number, since it is larger than the sum of its proper divisors (1984308597).

4006520523 is a wasteful number, since it uses less digits than its factorization.

4006520523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924 (or 2918 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 4006520523 is about 63297.0814730032. The cubic root of 4006520523 is about 1588.2631407877.

Adding to 4006520523 its reverse (3250256004), we get a palindrome (7256776527).

The spelling of 4006520523 in words is "four billion, six million, five hundred twenty thousand, five hundred twenty-three".