4913561 has 4 divisors (see below), whose sum is σ = 5202612. Its totient is φ = 4624512.

The previous prime is 4913543. The next prime is 4913569. The reversal of 4913561 is 1653194.

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 2755600 + 2157961 = 1660^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 4913561 - 2⁶ = 4913497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4913569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144500 + ... + 144533.

It is an arithmetic number, because the mean of its divisors is an integer number (1300653).

Almost surely, 2^4913561 is an apocalyptic number.

It is an amenable number.

4913561 is a deficient number, since it is larger than the sum of its proper divisors (289051).

4913561 is a wasteful number, since it uses less digits than its factorization.

4913561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289050.

The product of its digits is 3240, while the sum is 29.

The square root of 4913561 is about 2216.6553633797. The cubic root of 4913561 is about 170.0064703420.

The spelling of 4913561 in words is "four million, nine hundred thirteen thousand, five hundred sixty-one".