71200001 has 2 divisors, whose sum is σ = 71200002. Its totient is φ = 71200000.

The previous prime is 71199991. The next prime is 71200009. The reversal of 71200001 is 10000217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 303601 = 8420^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 71200001 - 2¹⁴ = 71183617 is a prime.

It is not a weakly prime, because it can be changed into another prime (71200009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600000 + 35600001.

It is an arithmetic number, because the mean of its divisors is an integer number (35600001).

Almost surely, 2^71200001 is an apocalyptic number.

It is an amenable number.

71200001 is a deficient number, since it is larger than the sum of its proper divisors (1).

71200001 is an equidigital number, since it uses as much as digits as its factorization.

71200001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 71200001 is about 8438.0093031473. The cubic root of 71200001 is about 414.4702215523.

Adding to 71200001 its reverse (10000217), we get a palindrome (81200218).

The spelling of 71200001 in words is "seventy-one million, two hundred thousand, one".