401304565 has 16 divisors (see below), whose sum is σ = 493454592. Its totient is φ = 313163584.

The previous prime is 401304557. The next prime is 401304577. The reversal of 401304565 is 565403104.

It is a cyclic number.

It is not a de Polignac number, because 401304565 - 2³ = 401304557 is a prime.

It is a super-2 number, since 2×401304565² = 322090707779678450, 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 15 ways as a sum of consecutive naturals, for example, 71802 + ... + 77188.

It is an arithmetic number, because the mean of its divisors is an integer number (30840912).

Almost surely, 2^401304565 is an apocalyptic number.

It is an amenable number.

401304565 is a deficient number, since it is larger than the sum of its proper divisors (92150027).

401304565 is a wasteful number, since it uses less digits than its factorization.

401304565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 401304565 is about 20032.5875762469. The cubic root of 401304565 is about 737.6064402534.

Adding to 401304565 its reverse (565403104), we get a palindrome (966707669).

The spelling of 401304565 in words is "four hundred one million, three hundred four thousand, five hundred sixty-five".