71173073 has 2 divisors, whose sum is σ = 71173074. Its totient is φ = 71173072.

The previous prime is 71173051. The next prime is 71173079. The reversal of 71173073 is 37037117.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70845889 + 327184 = 8417^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 71173073 - 2¹⁶ = 71107537 is a prime.

It is not a weakly prime, because it can be changed into another prime (71173079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35586536 + 35586537.

It is an arithmetic number, because the mean of its divisors is an integer number (35586537).

Almost surely, 2^71173073 is an apocalyptic number.

It is an amenable number.

71173073 is a deficient number, since it is larger than the sum of its proper divisors (1).

71173073 is an equidigital number, since it uses as much as digits as its factorization.

71173073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3087, while the sum is 29.

The square root of 71173073 is about 8436.4135152326. The cubic root of 71173073 is about 414.4179637747.

The spelling of 71173073 in words is "seventy-one million, one hundred seventy-three thousand, seventy-three".