401585550 has 48 divisors (see below), whose sum is σ = 998031360. Its totient is φ = 106863840.

The previous prime is 401585537. The next prime is 401585579. The reversal of 401585550 is 55585104.

It is a super-2 number, since 2×401585550² = 322541907937605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75891 + ... + 81009.

It is an arithmetic number, because the mean of its divisors is an integer number (20792320).

Almost surely, 2^401585550 is an apocalyptic number.

401585550 is an abundant number, since it is smaller than the sum of its proper divisors (596445810).

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

401585550 is a wasteful number, since it uses less digits than its factorization.

401585550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657 (or 5652 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 401585550 is about 20039.5995468971. The cubic root of 401585550 is about 737.7785522520.

The spelling of 401585550 in words is "four hundred one million, five hundred eighty-five thousand, five hundred fifty".