401255306 has 8 divisors (see below), whose sum is σ = 618150180. Its totient is φ = 195205248.

The previous prime is 401255303. The next prime is 401255311. The reversal of 401255306 is 603552104.

It can be written as a sum of positive squares in 2 ways, for example, as 393665281 + 7590025 = 19841^2 + 2755^2 .

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

It is a super-2 number, since 2×401255306² = 322011641186307272, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401255303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2711111 + ... + 2711258.

Almost surely, 2^401255306 is an apocalyptic number.

401255306 is a deficient number, since it is larger than the sum of its proper divisors (216894874).

401255306 is a wasteful number, since it uses less digits than its factorization.

401255306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422408.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 401255306 is about 20031.3580667912. The cubic root of 401255306 is about 737.5762593172.

The spelling of 401255306 in words is "four hundred one million, two hundred fifty-five thousand, three hundred six".