401051405 has 4 divisors (see below), whose sum is σ = 481261692. Its totient is φ = 320841120.

The previous prime is 401051401. The next prime is 401051407. The reversal of 401051405 is 504150104.

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 56355049 + 344696356 = 7507^2 + 18566^2 .

It is not a de Polignac number, because 401051405 - 2² = 401051401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401051401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40105136 + ... + 40105145.

It is an arithmetic number, because the mean of its divisors is an integer number (120315423).

Almost surely, 2^401051405 is an apocalyptic number.

It is an amenable number.

401051405 is a deficient number, since it is larger than the sum of its proper divisors (80210287).

401051405 is an equidigital number, since it uses as much as digits as its factorization.

401051405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80210286.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 401051405 is about 20026.2678749686. The cubic root of 401051405 is about 737.4513031142.

The spelling of 401051405 in words is "four hundred one million, fifty-one thousand, four hundred five".