71429537 has 2 divisors, whose sum is σ = 71429538. Its totient is φ = 71429536.

The previous prime is 71429489. The next prime is 71429587. The reversal of 71429537 is 73592417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57820816 + 13608721 = 7604^2 + 3689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71429537 is a prime.

It is a super-3 number, since 3×71429537³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71429537.

It is not a weakly prime, because it can be changed into another prime (71429587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35714768 + 35714769.

It is an arithmetic number, because the mean of its divisors is an integer number (35714769).

Almost surely, 2^71429537 is an apocalyptic number.

It is an amenable number.

71429537 is a deficient number, since it is larger than the sum of its proper divisors (1).

71429537 is an equidigital number, since it uses as much as digits as its factorization.

71429537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 71429537 is about 8451.5996710682. The cubic root of 71429537 is about 414.9151362739.

The spelling of 71429537 in words is "seventy-one million, four hundred twenty-nine thousand, five hundred thirty-seven".