401355065 has 12 divisors (see below), whose sum is σ = 483852132. Its totient is φ = 319606560.

The previous prime is 401355001. The next prime is 401355079. The reversal of 401355065 is 560553104.

It can be written as a sum of positive squares in 2 ways, for example, as 300814336 + 100540729 = 17344^2 + 10027^2 .

It is not a de Polignac number, because 401355065 - 2⁶ = 401355001 is a prime.

It is a super-2 number, since 2×401355065² = 322171776402308450, 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 11 ways as a sum of consecutive naturals, for example, 366659 + ... + 367751.

It is an arithmetic number, because the mean of its divisors is an integer number (40321011).

Almost surely, 2^401355065 is an apocalyptic number.

It is an amenable number.

401355065 is a deficient number, since it is larger than the sum of its proper divisors (82497067).

401355065 is an equidigital number, since it uses as much as digits as its factorization.

401355065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 401355065 is about 20033.8479828514. The cubic root of 401355065 is about 737.6373789852.

The spelling of 401355065 in words is "four hundred one million, three hundred fifty-five thousand, sixty-five".