401166535 has 16 divisors (see below), whose sum is σ = 600187392. Its totient is φ = 250077600.

The previous prime is 401166533. The next prime is 401166539. The reversal of 401166535 is 535661104.

It is not a de Polignac number, because 401166535 - 2¹ = 401166533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401166497 and 401166506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401166533) 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, 520611 + ... + 521380.

It is an arithmetic number, because the mean of its divisors is an integer number (37511712).

Almost surely, 2^401166535 is an apocalyptic number.

401166535 is a deficient number, since it is larger than the sum of its proper divisors (199020857).

401166535 is a wasteful number, since it uses less digits than its factorization.

401166535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042014.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 401166535 is about 20029.1421433870. The cubic root of 401166535 is about 737.5218631841.

The spelling of 401166535 in words is "four hundred one million, one hundred sixty-six thousand, five hundred thirty-five".