4000001522 has 16 divisors (see below), whose sum is σ = 6556053600. Its totient is φ = 1815239040.

The previous prime is 4000001521. The next prime is 4000001567. The reversal of 4000001522 is 2251000004.

It is a junction number, because it is equal to n+sod(n) for n = 4000001497 and 4000001506.

It is not an unprimeable number, because it can be changed into a prime (4000001521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133247 + ... + 160482.

It is an arithmetic number, because the mean of its divisors is an integer number (409753350).

Almost surely, 2^4000001522 is an apocalyptic number.

4000001522 is a deficient number, since it is larger than the sum of its proper divisors (2556052078).

4000001522 is a wasteful number, since it uses less digits than its factorization.

4000001522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294361.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4000001522 is about 63245.5652358329. The cubic root of 4000001522 is about 1587.4012533035.

Adding to 4000001522 its reverse (2251000004), we get a palindrome (6251001526).

The spelling of 4000001522 in words is "four billion, one thousand, five hundred twenty-two".