401520552 has 32 divisors (see below), whose sum is σ = 1062849600.
Its totient is φ = 125967104.
The previous prime is 401520523. The next prime is 401520557. The reversal of 401520552 is 255025104.
Adding to 401520552 its reverse (255025104), we get a palindrome (656545656).
It is a happy number.
It is a super-2 number, since 2×4015205522 = 322437507356769408, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is not an unprimeable number, because it can be changed into a prime (401520557) 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, 491652 + ... + 492467.
It is an arithmetic number, because the mean of its divisors is an integer number (33214050).
Almost surely, 2401520552 is an apocalyptic number.
It is an amenable number.
401520552 is an abundant number, since it is smaller than the sum of its proper divisors (661329048).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
401520552 is a wasteful number, since it uses less digits than its factorization.
401520552 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 984145 (or 984141 counting only the distinct ones).
The product of its (nonzero) digits is 2000, while the sum is 24.
The square root of 401520552 is about 20037.9777422773.
The cubic root of 401520552 is about 737.7387461072.
The spelling of 401520552 in words is "four hundred one million, five hundred twenty thousand, five hundred fifty-two".