401864255 has 16 divisors (see below), whose sum is σ = 522419520. Its totient is φ = 296753184.

The previous prime is 401864251. The next prime is 401864293. The reversal of 401864255 is 552468104.

It is not a de Polignac number, because 401864255 - 2² = 401864251 is a prime.

It is a super-2 number, since 2×401864255² = 322989758893410050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401864251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7307 + ... + 29276.

It is an arithmetic number, because the mean of its divisors is an integer number (32651220).

Almost surely, 2^401864255 is an apocalyptic number.

401864255 is a deficient number, since it is larger than the sum of its proper divisors (120555265).

401864255 is an equidigital number, since it uses as much as digits as its factorization.

401864255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36627 (or 36601 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 401864255 is about 20046.5521973231. The cubic root of 401864255 is about 737.9491883897.

The spelling of 401864255 in words is "four hundred one million, eight hundred sixty-four thousand, two hundred fifty-five".