71029057 has 6 divisors (see below), whose sum is σ = 78073394. Its totient is φ = 64571760.

The previous prime is 71029027. The next prime is 71029067. The reversal of 71029057 is 75092017.

71029057 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 19749136 = 7161^2 + 4444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71029057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71029027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293388 + ... + 293629.

Almost surely, 2^71029057 is an apocalyptic number.

It is an amenable number.

71029057 is a deficient number, since it is larger than the sum of its proper divisors (7044337).

71029057 is a wasteful number, since it uses less digits than its factorization.

71029057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587039 (or 587028 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 71029057 is about 8427.8738125342. The cubic root of 71029057 is about 414.1382553795.

The spelling of 71029057 in words is "seventy-one million, twenty-nine thousand, fifty-seven".