71057077 has 16 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 55988352.

The previous prime is 71057071. The next prime is 71057081. The reversal of 71057077 is 77075017.

It is not a de Polignac number, because 71057077 - 2³ = 71057069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71057071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22449 + ... + 25417.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^71057077 is an apocalyptic number.

It is an amenable number.

71057077 is a deficient number, since it is larger than the sum of its proper divisors (16759883).

71057077 is a wasteful number, since it uses less digits than its factorization.

71057077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 12005, while the sum is 34.

The square root of 71057077 is about 8429.5359896023. The cubic root of 71057077 is about 414.1927055292.

The spelling of 71057077 in words is "seventy-one million, fifty-seven thousand, seventy-seven".