3547121 has 4 divisors (see below), whose sum is σ = 3564144. Its totient is φ = 3530100.

The previous prime is 3547111. The next prime is 3547151. The reversal of 3547121 is 1217453.

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: 1217453 = 967 ⋅1259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3547121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3547111) 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, 8195 + ... + 8616.

It is an arithmetic number, because the mean of its divisors is an integer number (891036).

Almost surely, 2^3547121 is an apocalyptic number.

It is an amenable number.

3547121 is a deficient number, since it is larger than the sum of its proper divisors (17023).

3547121 is a wasteful number, since it uses less digits than its factorization.

3547121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17022.

The product of its digits is 840, while the sum is 23.

The square root of 3547121 is about 1883.3802059064. The cubic root of 3547121 is about 152.5077806655.

The spelling of 3547121 in words is "three million, five hundred forty-seven thousand, one hundred twenty-one".