401015 has 8 divisors (see below), whose sum is σ = 485520. Its totient is φ = 317952.

The previous prime is 400997. The next prime is 401017. The reversal of 401015 is 510104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401015 - 2⁸ = 400759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400987 and 401005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407 + ... + 983.

It is an arithmetic number, because the mean of its divisors is an integer number (60690).

2⁴⁰¹⁰¹⁵ is an apocalyptic number.

401015 is a deficient number, since it is larger than the sum of its proper divisors (84505).

401015 is a wasteful number, since it uses less digits than its factorization.

401015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 401015 is about 633.2574515945. The cubic root of 401015 is about 73.7428988662.

Adding to 401015 its reverse (510104), we get a palindrome (911119).

The spelling of 401015 in words is "four hundred one thousand, fifteen".