3871251 has 6 divisors (see below), whose sum is σ = 5591820. Its totient is φ = 2580828.

The previous prime is 3871211. The next prime is 3871271. The reversal of 3871251 is 1521783.

It is not a de Polignac number, because 3871251 - 2¹⁰ = 3870227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3871201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215061 + ... + 215078.

It is an arithmetic number, because the mean of its divisors is an integer number (931970).

Almost surely, 2^3871251 is an apocalyptic number.

3871251 is a deficient number, since it is larger than the sum of its proper divisors (1720569).

3871251 is a wasteful number, since it uses less digits than its factorization.

3871251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430145 (or 430142 counting only the distinct ones).

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

The square root of 3871251 is about 1967.5494911183. The cubic root of 3871251 is about 157.0183623566.

It can be divided in two parts, 38 and 71251, that added together give a square (71289 = 267²).

The spelling of 3871251 in words is "three million, eight hundred seventy-one thousand, two hundred fifty-one".