401365 has 4 divisors (see below), whose sum is σ = 481644. Its totient is φ = 321088.

The previous prime is 401347. The next prime is 401371. The reversal of 401365 is 563104.

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 128881 + 272484 = 359^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 401365 - 2⁷ = 401237 is a prime.

It is a super-2 number, since 2×401365² = 322187726450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40132 + ... + 40141.

It is an arithmetic number, because the mean of its divisors is an integer number (120411).

2⁴⁰¹³⁶⁵ is an apocalyptic number.

It is an amenable number.

401365 is a deficient number, since it is larger than the sum of its proper divisors (80279).

401365 is an equidigital number, since it uses as much as digits as its factorization.

401365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80278.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 401365 is about 633.5337402223. The cubic root of 401365 is about 73.7643465339.

Adding to 401365 its reverse (563104), we get a palindrome (964469).

The spelling of 401365 in words is "four hundred one thousand, three hundred sixty-five".