401115505 has 16 divisors (see below), whose sum is σ = 563520384. Its totient is φ = 268341120.

The previous prime is 401115499. The next prime is 401115553. The reversal of 401115505 is 505511104.

It is a happy number.

It is not a de Polignac number, because 401115505 - 2¹¹ = 401113457 is a prime.

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, 138327 + ... + 141196.

It is an arithmetic number, because the mean of its divisors is an integer number (35220024).

Almost surely, 2^401115505 is an apocalyptic number.

It is an amenable number.

401115505 is a deficient number, since it is larger than the sum of its proper divisors (162404879).

401115505 is a wasteful number, since it uses less digits than its factorization.

401115505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279576.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 401115505 is about 20027.8682090731. The cubic root of 401115505 is about 737.4905899403.

Adding to 401115505 its reverse (505511104), we get a palindrome (906626609).

The spelling of 401115505 in words is "four hundred one million, one hundred fifteen thousand, five hundred five".