4542161 has 4 divisors (see below), whose sum is σ = 4891572. Its totient is φ = 4192752.

The previous prime is 4542149. The next prime is 4542173. The reversal of 4542161 is 1612454.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4542149) and next prime (4542173).

It can be written as a sum of positive squares in 2 ways, for example, as 1500625 + 3041536 = 1225^2 + 1744^2 .

It is a cyclic number.

It is not a de Polignac number, because 4542161 - 2¹⁰ = 4541137 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4542191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174686 + ... + 174711.

It is an arithmetic number, because the mean of its divisors is an integer number (1222893).

Almost surely, 2^4542161 is an apocalyptic number.

It is an amenable number.

4542161 is a deficient number, since it is larger than the sum of its proper divisors (349411).

4542161 is a wasteful number, since it uses less digits than its factorization.

4542161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349410.

The product of its digits is 960, while the sum is 23.

The square root of 4542161 is about 2131.2346187128. The cubic root of 4542161 is about 165.6103625844.

The spelling of 4542161 in words is "four million, five hundred forty-two thousand, one hundred sixty-one".