401063550 has 48 divisors (see below), whose sum is σ = 1001281152. Its totient is φ = 106236000.

The previous prime is 401063521. The next prime is 401063557. The reversal of 401063550 is 55360104.

It is a super-2 number, since 2×401063550² = 321703942277205000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401063550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401063557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13797 + ... + 31503.

It is an arithmetic number, because the mean of its divisors is an integer number (20860024).

Almost surely, 2^401063550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401063550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500640576).

401063550 is an abundant number, since it is smaller than the sum of its proper divisors (600217602).

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

401063550 is a wasteful number, since it uses less digits than its factorization.

401063550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17873 (or 17868 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 401063550 is about 20026.5710994169. The cubic root of 401063550 is about 737.4587470940.

The spelling of 401063550 in words is "four hundred one million, sixty-three thousand, five hundred fifty".