401775552 has 280 divisors, whose sum is σ = 1301154624. Its totient is φ = 122093568.

The previous prime is 401775551. The next prime is 401775571. The reversal of 401775552 is 255577104.

It is a super-2 number, since 2×401775552² = 322847188369809408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401775551) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4141968 + ... + 4142064.

Almost surely, 2^401775552 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 401775552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650577312).

401775552 is an abundant number, since it is smaller than the sum of its proper divisors (899379072).

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

401775552 is a wasteful number, since it uses less digits than its factorization.

401775552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 401775552 is about 20044.3396498862. The cubic root of 401775552 is about 737.8948888571.

The spelling of 401775552 in words is "four hundred one million, seven hundred seventy-five thousand, five hundred fifty-two".