71354749 has 2 divisors, whose sum is σ = 71354750. Its totient is φ = 71354748.

The previous prime is 71354743. The next prime is 71354791. The reversal of 71354749 is 94745317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66096900 + 5257849 = 8130^2 + 2293^2 .

It is an emirp because it is prime and its reverse (94745317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71354749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71354743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35677374 + 35677375.

It is an arithmetic number, because the mean of its divisors is an integer number (35677375).

Almost surely, 2^71354749 is an apocalyptic number.

It is an amenable number.

71354749 is a deficient number, since it is larger than the sum of its proper divisors (1).

71354749 is an equidigital number, since it uses as much as digits as its factorization.

71354749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 71354749 is about 8447.1740244889. The cubic root of 71354749 is about 414.7702778548.

The spelling of 71354749 in words is "seventy-one million, three hundred fifty-four thousand, seven hundred forty-nine".