57071311 has 4 divisors (see below), whose sum is σ = 62259624. Its totient is φ = 51883000.

The previous prime is 57071293. The next prime is 57071359. The reversal of 57071311 is 11317075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57071311 - 2⁹ = 57070799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57071111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594140 + ... + 2594161.

It is an arithmetic number, because the mean of its divisors is an integer number (15564906).

Almost surely, 2^57071311 is an apocalyptic number.

57071311 is the 3379-th centered decagonal number.

57071311 is a deficient number, since it is larger than the sum of its proper divisors (5188313).

57071311 is a wasteful number, since it uses less digits than its factorization.

57071311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188312.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 57071311 is about 7554.5556454367. Note that the first 3 decimals coincide. The cubic root of 57071311 is about 385.0105377450.

Adding to 57071311 its reverse (11317075), we get a palindrome (68388386).

The spelling of 57071311 in words is "fifty-seven million, seventy-one thousand, three hundred eleven".