401522013 has 12 divisors (see below), whose sum is σ = 598685568. Its totient is φ = 259046280.

The previous prime is 401521999. The next prime is 401522047. The reversal of 401522013 is 310225104.

It is not a de Polignac number, because 401522013 - 2⁶ = 401521949 is a prime.

It is a super-2 number, since 2×401522013² = 322439853847144338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401522053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719295 + ... + 719852.

It is an arithmetic number, because the mean of its divisors is an integer number (49890464).

Almost surely, 2^401522013 is an apocalyptic number.

It is an amenable number.

401522013 is a deficient number, since it is larger than the sum of its proper divisors (197163555).

401522013 is a wasteful number, since it uses less digits than its factorization.

401522013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439184 (or 1439181 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 401522013 is about 20038.0141980187. The cubic root of 401522013 is about 737.7396409015.

Adding to 401522013 its reverse (310225104), we get a palindrome (711747117).

The spelling of 401522013 in words is "four hundred one million, five hundred twenty-two thousand, thirteen".