401145052 has 96 divisors (see below), whose sum is σ = 916715520. Its totient is φ = 149022720.

The previous prime is 401145049. The next prime is 401145067. The reversal of 401145052 is 250541104.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 866173 + ... + 866635.

It is an arithmetic number, because the mean of its divisors is an integer number (9549120).

Almost surely, 2^401145052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401145052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458357760).

401145052 is an abundant number, since it is smaller than the sum of its proper divisors (515570468).

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

401145052 is a wasteful number, since it uses less digits than its factorization.

401145052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 401145052 is about 20028.6058426442. The cubic root of 401145052 is about 737.5086978578.

Adding to 401145052 its reverse (250541104), we get a palindrome (651686156).

The spelling of 401145052 in words is "four hundred one million, one hundred forty-five thousand, fifty-two".