401330055 has 16 divisors (see below), whose sum is σ = 733860864. Its totient is φ = 183465120.

The previous prime is 401330053. The next prime is 401330063. The reversal of 401330055 is 550033104.

It is not a de Polignac number, because 401330055 - 2¹ = 401330053 is a prime.

It is a super-2 number, since 2×401330055² = 322131626092606050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401330053) 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, 1910991 + ... + 1911200.

It is an arithmetic number, because the mean of its divisors is an integer number (45866304).

Almost surely, 2^401330055 is an apocalyptic number.

401330055 is a deficient number, since it is larger than the sum of its proper divisors (332530809).

401330055 is a wasteful number, since it uses less digits than its factorization.

401330055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822206.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 401330055 is about 20033.2237795119. The cubic root of 401330055 is about 737.6220569792.

Adding to 401330055 its reverse (550033104), we get a palindrome (951363159).

The spelling of 401330055 in words is "four hundred one million, three hundred thirty thousand, fifty-five".