8250521 has 4 divisors (see below), whose sum is σ = 8426112. Its totient is φ = 8074932.

The previous prime is 8250509. The next prime is 8250547. The reversal of 8250521 is 1250528.

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 8250521 - 2¹⁰ = 8249497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8253521) 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, 87725 + ... + 87818.

It is an arithmetic number, because the mean of its divisors is an integer number (2106528).

Almost surely, 2^8250521 is an apocalyptic number.

It is an amenable number.

8250521 is a deficient number, since it is larger than the sum of its proper divisors (175591).

8250521 is a wasteful number, since it uses less digits than its factorization.

8250521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175590.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 8250521 is about 2872.3720162959. The cubic root of 8250521 is about 202.0662544487.

The spelling of 8250521 in words is "eight million, two hundred fifty thousand, five hundred twenty-one".