4050521 has 2 divisors, whose sum is σ = 4050522. Its totient is φ = 4050520.

The previous prime is 4050503. The next prime is 4050523. The reversal of 4050521 is 1250504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 6400 = 2011^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 4050521 - 2⁶ = 4050457 is a prime.

Together with 4050523, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4050521.

It is not a weakly prime, because it can be changed into another prime (4050523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025260 + 2025261.

It is an arithmetic number, because the mean of its divisors is an integer number (2025261).

Almost surely, 2^4050521 is an apocalyptic number.

It is an amenable number.

4050521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4050521 is an equidigital number, since it uses as much as digits as its factorization.

4050521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 4050521 is about 2012.5906190778. The cubic root of 4050521 is about 159.4056202092.

Subtracting from 4050521 its sum of digits (17), we obtain a palindrome (4050504).

The spelling of 4050521 in words is "four million, fifty thousand, five hundred twenty-one".