5036561 has 4 divisors (see below), whose sum is σ = 5041392. Its totient is φ = 5031732.

The previous prime is 5036543. The next prime is 5036569. The reversal of 5036561 is 1656305.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5036561 - 2¹⁴ = 5020177 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5036561.

It is not an unprimeable number, because it can be changed into a prime (5036569) 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, 131 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (1260348).

Almost surely, 2^5036561 is an apocalyptic number.

It is an amenable number.

5036561 is a deficient number, since it is larger than the sum of its proper divisors (4831).

5036561 is a wasteful number, since it uses less digits than its factorization.

5036561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 5036561 is about 2244.2283751882. The cubic root of 5036561 is about 171.4133724289.

The spelling of 5036561 in words is "five million, thirty-six thousand, five hundred sixty-one".