401501500055 has 32 divisors (see below), whose sum is σ = 490415990400. Its totient is φ = 315494645760.

The previous prime is 401501500031. The next prime is 401501500069. The reversal of 401501500055 is 550005105104.

It is not a de Polignac number, because 401501500055 - 2²⁰ = 401500451479 is a prime.

It is a super-2 number, since 2×401501500055² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401501499997 and 401501500033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135962459 + ... + 135965411.

It is an arithmetic number, because the mean of its divisors is an integer number (15325499700).

Almost surely, 2^401501500055 is an apocalyptic number.

401501500055 is a deficient number, since it is larger than the sum of its proper divisors (88914490345).

401501500055 is a wasteful number, since it uses less digits than its factorization.

401501500055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331.

The product of its (nonzero) digits is 2500, while the sum is 26.

Adding to 401501500055 its reverse (550005105104), we get a palindrome (951506605159).

The spelling of 401501500055 in words is "four hundred one billion, five hundred one million, five hundred thousand, fifty-five".