3955571 has 4 divisors (see below), whose sum is σ = 4092000. Its totient is φ = 3819144.

The previous prime is 3955561. The next prime is 3955579. The reversal of 3955571 is 1755593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1755593 = 7 ⋅250799.

It is a cyclic number.

It is not a de Polignac number, because 3955571 - 2¹⁰ = 3954547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3955579) 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, 68171 + ... + 68228.

It is an arithmetic number, because the mean of its divisors is an integer number (1023000).

Almost surely, 2^3955571 is an apocalyptic number.

3955571 is a deficient number, since it is larger than the sum of its proper divisors (136429).

3955571 is a wasteful number, since it uses less digits than its factorization.

3955571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136428.

The product of its digits is 23625, while the sum is 35.

The square root of 3955571 is about 1988.8617347619. The cubic root of 3955571 is about 158.1501936663.

The spelling of 3955571 in words is "three million, nine hundred fifty-five thousand, five hundred seventy-one".