5042561 has 4 divisors (see below), whose sum is σ = 5055300. Its totient is φ = 5029824.

The previous prime is 5042551. The next prime is 5042563. The reversal of 5042561 is 1652405.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1874161 + 3168400 = 1369^2 + 1780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5042561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5042563) 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, 5756 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (1263825).

Almost surely, 2^5042561 is an apocalyptic number.

It is an amenable number.

5042561 is a deficient number, since it is larger than the sum of its proper divisors (12739).

5042561 is a wasteful number, since it uses less digits than its factorization.

5042561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5042561 is about 2245.5647396590. The cubic root of 5042561 is about 171.4814130423.

Adding to 5042561 its reverse (1652405), we get a palindrome (6694966).

The spelling of 5042561 in words is "five million, forty-two thousand, five hundred sixty-one".