401515 has 8 divisors (see below), whose sum is σ = 486288. Its totient is φ = 318240.

The previous prime is 401507. The next prime is 401519. The reversal of 401515 is 515104.

It is a happy number.

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

It is not a de Polignac number, because 401515 - 2³ = 401507 is a prime.

It is a super-2 number, since 2×401515² = 322428590450, which contains 22 as substring.

It is a Duffinian number.

401515 is a modest number, since divided by 1515 gives 40 as remainder.

It is not an unprimeable number, because it can be changed into a prime (401519) 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, 349 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (60786).

2⁴⁰¹⁵¹⁵ is an apocalyptic number.

401515 is a deficient number, since it is larger than the sum of its proper divisors (84773).

401515 is a wasteful number, since it uses less digits than its factorization.

401515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 401515 is about 633.6521127559. The cubic root of 401515 is about 73.7735345746.

Adding to 401515 its reverse (515104), we get a palindrome (916619).

The spelling of 401515 in words is "four hundred one thousand, five hundred fifteen".