5207561 has 4 divisors (see below), whose sum is σ = 5238912. Its totient is φ = 5176212.

The previous prime is 5207557. The next prime is 5207563. The reversal of 5207561 is 1657025.

5207561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 5207561 - 2² = 5207557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5207561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5207563) 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, 15425 + ... + 15758.

It is an arithmetic number, because the mean of its divisors is an integer number (1309728).

Almost surely, 2^5207561 is an apocalyptic number.

It is an amenable number.

5207561 is a deficient number, since it is larger than the sum of its proper divisors (31351).

5207561 is a wasteful number, since it uses less digits than its factorization.

5207561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31350.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 5207561 is about 2282.0081069094. The cubic root of 5207561 is about 173.3317500677.

The spelling of 5207561 in words is "five million, two hundred seven thousand, five hundred sixty-one".