401512671 has 12 divisors (see below), whose sum is σ = 662814672. Its totient is φ = 229435776.

The previous prime is 401512669. The next prime is 401512691. The reversal of 401512671 is 176215104.

It is a happy number.

It is not a de Polignac number, because 401512671 - 2¹ = 401512669 is a prime.

It is a super-2 number, since 2×401512671² = 322424849947108482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401512691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3186546 + ... + 3186671.

It is an arithmetic number, because the mean of its divisors is an integer number (55234556).

Almost surely, 2^401512671 is an apocalyptic number.

401512671 is a deficient number, since it is larger than the sum of its proper divisors (261302001).

401512671 is a wasteful number, since it uses less digits than its factorization.

401512671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373230 (or 6373227 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 401512671 is about 20037.7810897315. The cubic root of 401512671 is about 737.7339193247.

Adding to 401512671 its reverse (176215104), we get a palindrome (577727775).

The spelling of 401512671 in words is "four hundred one million, five hundred twelve thousand, six hundred seventy-one".