3922521 has 4 divisors (see below), whose sum is σ = 5230032. Its totient is φ = 2615012.

The previous prime is 3922519. The next prime is 3922543. The reversal of 3922521 is 1252293.

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 3922521 - 2¹ = 3922519 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3922491 and 3922500.

It is not an unprimeable number, because it can be changed into a prime (3922561) 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, 653751 + ... + 653756.

It is an arithmetic number, because the mean of its divisors is an integer number (1307508).

Almost surely, 2^3922521 is an apocalyptic number.

It is an amenable number.

3922521 is a deficient number, since it is larger than the sum of its proper divisors (1307511).

3922521 is a wasteful number, since it uses less digits than its factorization.

3922521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307510.

The product of its digits is 1080, while the sum is 24.

The square root of 3922521 is about 1980.5355336373. The cubic root of 3922521 is about 157.7084968629.

The spelling of 3922521 in words is "three million, nine hundred twenty-two thousand, five hundred twenty-one".