401521452 has 24 divisors (see below), whose sum is σ = 986193600. Its totient is φ = 126796176.

The previous prime is 401521441. The next prime is 401521457. The reversal of 401521452 is 254125104.

It is a super-2 number, since 2×401521452² = 322438952832376608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401521457) 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 in 7 ways as a sum of consecutive naturals, for example, 880302 + ... + 880757.

It is an arithmetic number, because the mean of its divisors is an integer number (41091400).

Almost surely, 2^401521452 is an apocalyptic number.

It is an amenable number.

401521452 is an abundant number, since it is smaller than the sum of its proper divisors (584672148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401521452 is a wasteful number, since it uses less digits than its factorization.

401521452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761085 (or 1761083 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 401521452 is about 20038.0001996207. Note that the first 3 decimals coincide. The cubic root of 401521452 is about 737.7392973155.

Adding to 401521452 its reverse (254125104), we get a palindrome (655646556).

The spelling of 401521452 in words is "four hundred one million, five hundred twenty-one thousand, four hundred fifty-two".