3746521 has 2 divisors, whose sum is σ = 3746522. Its totient is φ = 3746520.

The previous prime is 3746513. The next prime is 3746527. The reversal of 3746521 is 1256473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 1073296 = 1635^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 3746521 - 2³ = 3746513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3746521.

It is not a weakly prime, because it can be changed into another prime (3746527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1873260 + 1873261.

It is an arithmetic number, because the mean of its divisors is an integer number (1873261).

Almost surely, 2^3746521 is an apocalyptic number.

It is an amenable number.

3746521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3746521 is an equidigital number, since it uses as much as digits as its factorization.

3746521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 3746521 is about 1935.5931907299. The cubic root of 3746521 is about 155.3135657130.

The spelling of 3746521 in words is "three million, seven hundred forty-six thousand, five hundred twenty-one".