5181251 has 2 divisors, whose sum is σ = 5181252. Its totient is φ = 5181250.

The previous prime is 5181223. The next prime is 5181269. The reversal of 5181251 is 1521815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5181251 - 2¹⁸ = 4919107 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5181151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590625 + 2590626.

It is an arithmetic number, because the mean of its divisors is an integer number (2590626).

Almost surely, 2^5181251 is an apocalyptic number.

5181251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181251 is an equidigital number, since it uses as much as digits as its factorization.

5181251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 23.

The square root of 5181251 is about 2276.2361476789. The cubic root of 5181251 is about 173.0393508667.

The spelling of 5181251 in words is "five million, one hundred eighty-one thousand, two hundred fifty-one".