401415555 has 16 divisors (see below), whose sum is σ = 645857280. Its totient is φ = 212890848.

The previous prime is 401415551. The next prime is 401415569. The reversal of 401415555 is 555514104.

401415555 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 401415555 - 2² = 401415551 is a prime.

It is a super-2 number, since 2×401415555² = 322268895591916050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401415551) 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 15 ways as a sum of consecutive naturals, for example, 72067 + ... + 77436.

It is an arithmetic number, because the mean of its divisors is an integer number (40366080).

Almost surely, 2^401415555 is an apocalyptic number.

401415555 is a deficient number, since it is larger than the sum of its proper divisors (244441725).

401415555 is a wasteful number, since it uses less digits than its factorization.

401415555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149690.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 401415555 is about 20035.3576209660. The cubic root of 401415555 is about 737.6744346561.

Adding to 401415555 its reverse (555514104), we get a palindrome (956929659).

The spelling of 401415555 in words is "four hundred one million, four hundred fifteen thousand, five hundred fifty-five".