401106655 has 4 divisors (see below), whose sum is σ = 481327992. Its totient is φ = 320885320.

The previous prime is 401106647. The next prime is 401106661. The reversal of 401106655 is 556601104.

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

It is not a de Polignac number, because 401106655 - 2³ = 401106647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40110661 + ... + 40110670.

It is an arithmetic number, because the mean of its divisors is an integer number (120331998).

Almost surely, 2^401106655 is an apocalyptic number.

401106655 is a deficient number, since it is larger than the sum of its proper divisors (80221337).

401106655 is an equidigital number, since it uses as much as digits as its factorization.

401106655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80221336.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 401106655 is about 20027.6472657175. The cubic root of 401106655 is about 737.4851660331.

Adding to 401106655 its reverse (556601104), we get a palindrome (957707759).

The spelling of 401106655 in words is "four hundred one million, one hundred six thousand, six hundred fifty-five".