4251791 has 4 divisors (see below), whose sum is σ = 4264392. Its totient is φ = 4239192.

The previous prime is 4251773. The next prime is 4251799. The reversal of 4251791 is 1971524.

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

It is a cyclic number.

It is not a de Polignac number, because 4251791 - 2⁶ = 4251727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251799) 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, 5780 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (1066098).

Almost surely, 2^4251791 is an apocalyptic number.

4251791 is a deficient number, since it is larger than the sum of its proper divisors (12601).

4251791 is a wasteful number, since it uses less digits than its factorization.

4251791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12600.

The product of its digits is 2520, while the sum is 29.

The square root of 4251791 is about 2061.9871483596. The cubic root of 4251791 is about 162.0033403772.

The spelling of 4251791 in words is "four million, two hundred fifty-one thousand, seven hundred ninety-one".