71748251 has 2 divisors, whose sum is σ = 71748252. Its totient is φ = 71748250.

The previous prime is 71748227. The next prime is 71748253. The reversal of 71748251 is 15284717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71748251 - 2¹⁴ = 71731867 is a prime.

Together with 71748253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71748253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35874125 + 35874126.

It is an arithmetic number, because the mean of its divisors is an integer number (35874126).

Almost surely, 2^71748251 is an apocalyptic number.

71748251 is a deficient number, since it is larger than the sum of its proper divisors (1).

71748251 is an equidigital number, since it uses as much as digits as its factorization.

71748251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 35.

The square root of 71748251 is about 8470.4339322139. The cubic root of 71748251 is about 415.5313289273.

The spelling of 71748251 in words is "seventy-one million, seven hundred forty-eight thousand, two hundred fifty-one".