71251205 has 8 divisors (see below), whose sum is σ = 85567104. Its totient is φ = 56957200.

The previous prime is 71251189. The next prime is 71251207. The reversal of 71251205 is 50215217.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71251205 - 2⁴ = 71251189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71251207) 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 in 7 ways as a sum of consecutive naturals, for example, 2840 + ... + 12270.

It is an arithmetic number, because the mean of its divisors is an integer number (10695888).

Almost surely, 2^71251205 is an apocalyptic number.

It is an amenable number.

71251205 is a deficient number, since it is larger than the sum of its proper divisors (14315899).

71251205 is a wasteful number, since it uses less digits than its factorization.

71251205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10947.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 71251205 is about 8441.0428858050. The cubic root of 71251205 is about 414.5695541717.

The spelling of 71251205 in words is "seventy-one million, two hundred fifty-one thousand, two hundred five".