3548621 has 2 divisors, whose sum is σ = 3548622. Its totient is φ = 3548620.

The previous prime is 3548593. The next prime is 3548627. The reversal of 3548621 is 1268453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3200521 + 348100 = 1789^2 + 590^2 .

It is an emirp because it is prime and its reverse (1268453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3548621 - 2⁶ = 3548557 is a prime.

It is a super-2 number, since 2×3548621² = 25185422003282, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3548627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1774310 + 1774311.

It is an arithmetic number, because the mean of its divisors is an integer number (1774311).

Almost surely, 2^3548621 is an apocalyptic number.

It is an amenable number.

3548621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3548621 is an equidigital number, since it uses as much as digits as its factorization.

3548621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 3548621 is about 1883.7783839932. The cubic root of 3548621 is about 152.5292750391.

The spelling of 3548621 in words is "three million, five hundred forty-eight thousand, six hundred twenty-one".