71048149 has 2 divisors, whose sum is σ = 71048150. Its totient is φ = 71048148.

The previous prime is 71048137. The next prime is 71048227. The reversal of 71048149 is 94184017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 3972049 = 8190^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 71048149 - 2⁹ = 71047637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71048129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35524074 + 35524075.

It is an arithmetic number, because the mean of its divisors is an integer number (35524075).

Almost surely, 2^71048149 is an apocalyptic number.

It is an amenable number.

71048149 is a deficient number, since it is larger than the sum of its proper divisors (1).

71048149 is an equidigital number, since it uses as much as digits as its factorization.

71048149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 71048149 is about 8429.0064064515. The cubic root of 71048149 is about 414.1753576566.

The spelling of 71048149 in words is "seventy-one million, forty-eight thousand, one hundred forty-nine".