5440161 has 4 divisors (see below), whose sum is σ = 7253552. Its totient is φ = 3626772.

The previous prime is 5440117. The next prime is 5440181. The reversal of 5440161 is 1610445.

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.

It is not a de Polignac number, because 5440161 - 2¹³ = 5431969 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5440111) 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, 906691 + ... + 906696.

It is an arithmetic number, because the mean of its divisors is an integer number (1813388).

Almost surely, 2^5440161 is an apocalyptic number.

It is an amenable number.

5440161 is a deficient number, since it is larger than the sum of its proper divisors (1813391).

5440161 is a wasteful number, since it uses less digits than its factorization.

5440161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813390.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 5440161 is about 2332.4152717730. The cubic root of 5440161 is about 175.8749218927.

The spelling of 5440161 in words is "five million, four hundred forty thousand, one hundred sixty-one".