5102561 has 2 divisors, whose sum is σ = 5102562. Its totient is φ = 5102560.

The previous prime is 5102543. The next prime is 5102563. The reversal of 5102561 is 1652015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 776161 = 2080^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 5102561 - 2¹⁴ = 5086177 is a prime.

It is a super-2 number, since 2×5102561² = 52072257517442, which contains 22 as substring.

Together with 5102563, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₃₅₅₁₃₃ and since 5102561 and 355133 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (5102563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2551280 + 2551281.

It is an arithmetic number, because the mean of its divisors is an integer number (2551281).

Almost surely, 2^5102561 is an apocalyptic number.

It is an amenable number.

5102561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5102561 is an equidigital number, since it uses as much as digits as its factorization.

5102561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5102561 is about 2258.8849018930. The cubic root of 5102561 is about 172.1588693486.

Adding to 5102561 its reverse (1652015), we get a palindrome (6754576).

The spelling of 5102561 in words is "five million, one hundred two thousand, five hundred sixty-one".