4081251 has 4 divisors (see below), whose sum is σ = 5441672. Its totient is φ = 2720832.

The previous prime is 4081229. The next prime is 4081261. The reversal of 4081251 is 1521804.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4081251 - 2¹¹ = 4079203 is a prime.

It is a D-number.

It is a Duffinian number.

4081251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4081201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680206 + ... + 680211.

It is an arithmetic number, because the mean of its divisors is an integer number (1360418).

Almost surely, 2^4081251 is an apocalyptic number.

4081251 is a deficient number, since it is larger than the sum of its proper divisors (1360421).

4081251 is a wasteful number, since it uses less digits than its factorization.

4081251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360420.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 4081251 is about 2020.2106325827. The cubic root of 4081251 is about 159.8077247607.

The spelling of 4081251 in words is "four million, eighty-one thousand, two hundred fifty-one".