5251261 has 2 divisors, whose sum is σ = 5251262. Its totient is φ = 5251260.

The previous prime is 5251247. The next prime is 5251271. The reversal of 5251261 is 1621525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 256036 = 2235^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 5251261 - 2⁵ = 5251229 is a prime.

5251261 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5251241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625630 + 2625631.

It is an arithmetic number, because the mean of its divisors is an integer number (2625631).

Almost surely, 2^5251261 is an apocalyptic number.

It is an amenable number.

5251261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5251261 is an equidigital number, since it uses as much as digits as its factorization.

5251261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 5251261 is about 2291.5630037160. The cubic root of 5251261 is about 173.8152462720.

Adding to 5251261 its reverse (1621525), we get a palindrome (6872786).

The spelling of 5251261 in words is "five million, two hundred fifty-one thousand, two hundred sixty-one".