401520524 has 6 divisors (see below), whose sum is σ = 702660924. Its totient is φ = 200760260.

The previous prime is 401520523. The next prime is 401520557. The reversal of 401520524 is 425025104.

It is a happy number.

It is a super-2 number, since 2×401520524² = 322437462386469152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401520524.

It is not an unprimeable number, because it can be changed into a prime (401520523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50190062 + ... + 50190069.

It is an arithmetic number, because the mean of its divisors is an integer number (117110154).

Almost surely, 2^401520524 is an apocalyptic number.

It is an amenable number.

401520524 is a deficient number, since it is larger than the sum of its proper divisors (301140400).

401520524 is a wasteful number, since it uses less digits than its factorization.

401520524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100380135 (or 100380133 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 401520524 is about 20037.9770436040. The cubic root of 401520524 is about 737.7387289584.

Adding to 401520524 its reverse (425025104), we get a palindrome (826545628).

The spelling of 401520524 in words is "four hundred one million, five hundred twenty thousand, five hundred twenty-four".