71201165 has 12 divisors (see below), whose sum is σ = 99391356. Its totient is φ = 48823488.

The previous prime is 71201147. The next prime is 71201167. The reversal of 71201165 is 56110217.

It can be written as a sum of positive squares in 2 ways, for example, as 30891364 + 40309801 = 5558^2 + 6349^2 .

It is not a de Polignac number, because 71201165 - 2¹⁰ = 71200141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71201165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71201167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145064 + ... + 145553.

It is an arithmetic number, because the mean of its divisors is an integer number (8282613).

Almost surely, 2^71201165 is an apocalyptic number.

It is an amenable number.

71201165 is a deficient number, since it is larger than the sum of its proper divisors (28190191).

71201165 is a wasteful number, since it uses less digits than its factorization.

71201165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290636 (or 290629 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 71201165 is about 8438.0782764798. The cubic root of 71201165 is about 414.4724801698.

The spelling of 71201165 in words is "seventy-one million, two hundred one thousand, one hundred sixty-five".