4250521 has 4 divisors (see below), whose sum is σ = 4636944. Its totient is φ = 3864100.

The previous prime is 4250489. The next prime is 4250531. The reversal of 4250521 is 1250524.

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 4250521 - 2⁵ = 4250489 is a prime.

It is a Duffinian number.

4250521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4250531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193195 + ... + 193216.

It is an arithmetic number, because the mean of its divisors is an integer number (1159236).

Almost surely, 2^4250521 is an apocalyptic number.

It is an amenable number.

4250521 is a deficient number, since it is larger than the sum of its proper divisors (386423).

4250521 is a wasteful number, since it uses less digits than its factorization.

4250521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386422.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4250521 is about 2061.6791699971. The cubic root of 4250521 is about 161.9872087650.

The spelling of 4250521 in words is "four million, two hundred fifty thousand, five hundred twenty-one".