671251 has 16 divisors (see below), whose sum is σ = 832000. Its totient is φ = 539784.

The previous prime is 671249. The next prime is 671257. The reversal of 671251 is 152176.

671251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671251 - 2¹ = 671249 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671251.

It is not an unprimeable number, because it can be changed into a prime (671257) 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, 6466 + ... + 6568.

It is an arithmetic number, because the mean of its divisors is an integer number (52000).

2⁶⁷¹²⁵¹ is an apocalyptic number.

671251 is a deficient number, since it is larger than the sum of its proper divisors (160749).

671251 is a wasteful number, since it uses less digits than its factorization.

671251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 129 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 671251 is about 819.2990906867. The cubic root of 671251 is about 87.5578284396.

The spelling of 671251 in words is "six hundred seventy-one thousand, two hundred fifty-one".