401705555 has 4 divisors (see below), whose sum is σ = 482046672. Its totient is φ = 321364440.

The previous prime is 401705537. The next prime is 401705627. The reversal of 401705555 is 555507104.

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

It is not a de Polignac number, because 401705555 - 2¹⁰ = 401704531 is a prime.

It is a super-2 number, since 2×401705555² = 322734705835716050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40170551 + ... + 40170560.

It is an arithmetic number, because the mean of its divisors is an integer number (120511668).

Almost surely, 2^401705555 is an apocalyptic number.

401705555 is a deficient number, since it is larger than the sum of its proper divisors (80341117).

401705555 is an equidigital number, since it uses as much as digits as its factorization.

401705555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80341116.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 401705555 is about 20042.5935198018. The cubic root of 401705555 is about 737.8520345586.

The spelling of 401705555 in words is "four hundred one million, seven hundred five thousand, five hundred fifty-five".