71027057 has 4 divisors (see below), whose sum is σ = 71278320. Its totient is φ = 70775796.

The previous prime is 71027041. The next prime is 71027081. The reversal of 71027057 is 75072017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71027057 - 2⁴ = 71027041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71027017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125207 + ... + 125772.

It is an arithmetic number, because the mean of its divisors is an integer number (17819580).

Almost surely, 2^71027057 is an apocalyptic number.

It is an amenable number.

71027057 is a deficient number, since it is larger than the sum of its proper divisors (251263).

71027057 is a wasteful number, since it uses less digits than its factorization.

71027057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251262.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 71027057 is about 8427.7551578104. The cubic root of 71027057 is about 414.1343683117.

The spelling of 71027057 in words is "seventy-one million, twenty-seven thousand, fifty-seven".