71445201 has 4 divisors (see below), whose sum is σ = 95260272. Its totient is φ = 47630132.

The previous prime is 71445167. The next prime is 71445211. The reversal of 71445201 is 10254417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71445201 - 2²⁶ = 4336337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71445211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11907531 + ... + 11907536.

It is an arithmetic number, because the mean of its divisors is an integer number (23815068).

Almost surely, 2^71445201 is an apocalyptic number.

It is an amenable number.

71445201 is a deficient number, since it is larger than the sum of its proper divisors (23815071).

71445201 is a wasteful number, since it uses less digits than its factorization.

71445201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23815070.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 71445201 is about 8452.5263087434. The cubic root of 71445201 is about 414.9454633904.

Adding to 71445201 its reverse (10254417), we get a palindrome (81699618).

The spelling of 71445201 in words is "seventy-one million, four hundred forty-five thousand, two hundred one".