5205561 has 8 divisors (see below), whose sum is σ = 6954144. Its totient is φ = 3463680.

The previous prime is 5205539. The next prime is 5205583. The reversal of 5205561 is 1655025.

It is an interprime number because it is at equal distance from previous prime (5205539) and next prime (5205583).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5205561 - 2⁷ = 5205433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5205461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 3276.

It is an arithmetic number, because the mean of its divisors is an integer number (869268).

Almost surely, 2^5205561 is an apocalyptic number.

It is an amenable number.

5205561 is a deficient number, since it is larger than the sum of its proper divisors (1748583).

5205561 is a wasteful number, since it uses less digits than its factorization.

5205561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 5205561 is about 2281.5698542889. The cubic root of 5205561 is about 173.3095574719.

The spelling of 5205561 in words is "five million, two hundred five thousand, five hundred sixty-one".