71851037 has 2 divisors, whose sum is σ = 71851038. Its totient is φ = 71851036.

The previous prime is 71851007. The next prime is 71851051. The reversal of 71851037 is 73015817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65189476 + 6661561 = 8074^2 + 2581^2 .

It is a cyclic number.

It is not a de Polignac number, because 71851037 - 2⁶ = 71850973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71850994 and 71851012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71851007) 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, 35925518 + 35925519.

It is an arithmetic number, because the mean of its divisors is an integer number (35925519).

Almost surely, 2^71851037 is an apocalyptic number.

It is an amenable number.

71851037 is a deficient number, since it is larger than the sum of its proper divisors (1).

71851037 is an equidigital number, since it uses as much as digits as its factorization.

71851037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 71851037 is about 8476.4991004541. The cubic root of 71851037 is about 415.7296632564.

The spelling of 71851037 in words is "seventy-one million, eight hundred fifty-one thousand, thirty-seven".