71520201 has 12 divisors (see below), whose sum is σ = 104615680. Its totient is φ = 47076120.

The previous prime is 71520181. The next prime is 71520233. The reversal of 71520201 is 10202517.

It is not a de Polignac number, because 71520201 - 2²² = 67325897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71520301) 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 11 ways as a sum of consecutive naturals, for example, 49585 + ... + 51006.

Almost surely, 2^71520201 is an apocalyptic number.

It is an amenable number.

71520201 is a deficient number, since it is larger than the sum of its proper divisors (33095479).

71520201 is a wasteful number, since it uses less digits than its factorization.

71520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100676 (or 100673 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 71520201 is about 8456.9616884553. The cubic root of 71520201 is about 415.0906097211.

Adding to 71520201 its reverse (10202517), we get a palindrome (81722718).

The spelling of 71520201 in words is "seventy-one million, five hundred twenty thousand, two hundred one".