401441555 has 16 divisors (see below), whose sum is σ = 491166720. Its totient is φ = 314906592.

The previous prime is 401441543. The next prime is 401441561. The reversal of 401441555 is 555144104.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401441555 is a prime.

It is a super-2 number, since 2×401441555² = 322310644161636050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73406 + ... + 78684.

It is an arithmetic number, because the mean of its divisors is an integer number (30697920).

Almost surely, 2^401441555 is an apocalyptic number.

401441555 is a deficient number, since it is larger than the sum of its proper divisors (89725165).

401441555 is a wasteful number, since it uses less digits than its factorization.

401441555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 401441555 is about 20036.0064633649. The cubic root of 401441555 is about 737.6903608959.

Adding to 401441555 its reverse (555144104), we get a palindrome (956585659).

The spelling of 401441555 in words is "four hundred one million, four hundred forty-one thousand, five hundred fifty-five".