3901571 has 2 divisors, whose sum is σ = 3901572. Its totient is φ = 3901570.

The previous prime is 3901561. The next prime is 3901589. The reversal of 3901571 is 1751093.

It is a weak prime.

It is an emirp because it is prime and its reverse (1751093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3901571 - 2¹⁴ = 3885187 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3901571.

It is not a weakly prime, because it can be changed into another prime (3901511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950785 + 1950786.

It is an arithmetic number, because the mean of its divisors is an integer number (1950786).

Almost surely, 2^3901571 is an apocalyptic number.

3901571 is a deficient number, since it is larger than the sum of its proper divisors (1).

3901571 is an equidigital number, since it uses as much as digits as its factorization.

3901571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 3901571 is about 1975.2394791518. The cubic root of 3901571 is about 157.4272242934.

The spelling of 3901571 in words is "three million, nine hundred one thousand, five hundred seventy-one".