401133505 has 4 divisors (see below), whose sum is σ = 481360212. Its totient is φ = 320906800.

The previous prime is 401133493. The next prime is 401133511. The reversal of 401133505 is 505331104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65950641 + 335182864 = 8121^2 + 18308^2 .

It is not a de Polignac number, because 401133505 - 2¹¹ = 401131457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40113346 + ... + 40113355.

It is an arithmetic number, because the mean of its divisors is an integer number (120340053).

Almost surely, 2^401133505 is an apocalyptic number.

It is an amenable number.

401133505 is a deficient number, since it is larger than the sum of its proper divisors (80226707).

401133505 is an equidigital number, since it uses as much as digits as its factorization.

401133505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80226706.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 401133505 is about 20028.3175778696. The cubic root of 401133505 is about 737.5016213696.

Adding to 401133505 its reverse (505331104), we get a palindrome (906464609).

The spelling of 401133505 in words is "four hundred one million, one hundred thirty-three thousand, five hundred five".