71057255 has 8 divisors (see below), whose sum is σ = 85449600. Its totient is φ = 56725216.

The previous prime is 71057249. The next prime is 71057257. The reversal of 71057255 is 55275017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71057255 - 2⁶ = 71057191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71057257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12440 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (10681200).

Almost surely, 2^71057255 is an apocalyptic number.

71057255 is a deficient number, since it is larger than the sum of its proper divisors (14392345).

71057255 is a wasteful number, since it uses less digits than its factorization.

71057255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30153.

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 71057255 is about 8429.5465477094. The cubic root of 71057255 is about 414.1930513838.

The spelling of 71057255 in words is "seventy-one million, fifty-seven thousand, two hundred fifty-five".