4251997 has 4 divisors (see below), whose sum is σ = 4261216. Its totient is φ = 4242780.

The previous prime is 4251971. The next prime is 4252019. The reversal of 4251997 is 7991524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4251997 - 2⁷ = 4251869 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 (4251917) 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, 3879 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (1065304).

Almost surely, 2^4251997 is an apocalyptic number.

It is an amenable number.

4251997 is a deficient number, since it is larger than the sum of its proper divisors (9219).

4251997 is an equidigital number, since it uses as much as digits as its factorization.

4251997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218.

The product of its digits is 22680, while the sum is 37.

The square root of 4251997 is about 2062.0370995693. The cubic root of 4251997 is about 162.0059566981.

The spelling of 4251997 in words is "four million, two hundred fifty-one thousand, nine hundred ninety-seven".