71878201 has 2 divisors, whose sum is σ = 71878202. Its totient is φ = 71878200.

The previous prime is 71878171. The next prime is 71878231. The reversal of 71878201 is 10287817.

It is a balanced prime because it is at equal distance from previous prime (71878171) and next prime (71878231).

It can be written as a sum of positive squares in only one way, i.e., 61638201 + 10240000 = 7851^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 71878201 - 2¹⁷ = 71747129 is a prime.

It is not a weakly prime, because it can be changed into another prime (71878231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35939100 + 35939101.

It is an arithmetic number, because the mean of its divisors is an integer number (35939101).

Almost surely, 2^71878201 is an apocalyptic number.

It is an amenable number.

71878201 is a deficient number, since it is larger than the sum of its proper divisors (1).

71878201 is an equidigital number, since it uses as much as digits as its factorization.

71878201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 71878201 is about 8478.1012614854. The cubic root of 71878201 is about 415.7820469018.

The spelling of 71878201 in words is "seventy-one million, eight hundred seventy-eight thousand, two hundred one".