3540181 has 4 divisors (see below), whose sum is σ = 3615552. Its totient is φ = 3464812.

The previous prime is 3540167. The next prime is 3540203. The reversal of 3540181 is 1810453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1810453 = 19 ⋅95287.

It is a cyclic number.

It is not a de Polignac number, because 3540181 - 2⁵ = 3540149 is a prime.

It is a super-2 number, since 2×3540181² = 25065763025522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3540101) 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, 37615 + ... + 37708.

It is an arithmetic number, because the mean of its divisors is an integer number (903888).

Almost surely, 2^3540181 is an apocalyptic number.

It is an amenable number.

3540181 is a deficient number, since it is larger than the sum of its proper divisors (75371).

3540181 is an equidigital number, since it uses as much as digits as its factorization.

3540181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75370.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 3540181 is about 1881.5368718152. The cubic root of 3540181 is about 152.4082544102.

It can be divided in two parts, 3540 and 181, that added together give a square (3721 = 61²).

The spelling of 3540181 in words is "three million, five hundred forty thousand, one hundred eighty-one".