4106521 has 2 divisors, whose sum is σ = 4106522. Its totient is φ = 4106520.

The previous prime is 4106513. The next prime is 4106551. The reversal of 4106521 is 1256014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 632025 = 1864^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 4106521 - 2³ = 4106513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4106551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2053260 + 2053261.

It is an arithmetic number, because the mean of its divisors is an integer number (2053261).

Almost surely, 2^4106521 is an apocalyptic number.

It is an amenable number.

4106521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4106521 is an equidigital number, since it uses as much as digits as its factorization.

4106521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4106521 is about 2026.4552795460. The cubic root of 4106521 is about 160.1368750617.

The spelling of 4106521 in words is "four million, one hundred six thousand, five hundred twenty-one".