401550 has 24 divisors (see below), whose sum is σ = 996216. Its totient is φ = 107040.

The previous prime is 401539. The next prime is 401551. The reversal of 401550 is 55104.

401550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×401550² = 322484805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1189 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (41509).

2⁴⁰¹⁵⁵⁰ is an apocalyptic number.

401550 is an abundant number, since it is smaller than the sum of its proper divisors (594666).

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

401550 is a wasteful number, since it uses less digits than its factorization.

401550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2687 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 401550 is about 633.6797298320. The cubic root of 401550 is about 73.7756781215.

Adding to 401550 its reverse (55104), we get a palindrome (456654).

The spelling of 401550 in words is "four hundred one thousand, five hundred fifty".