57232711 has 4 divisors (see below), whose sum is σ = 57377272. Its totient is φ = 57088152.

The previous prime is 57232667. The next prime is 57232741. The reversal of 57232711 is 11723275.

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 57232711 - 2¹⁹ = 56708423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57232711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57232741) 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, 71685 + ... + 72478.

It is an arithmetic number, because the mean of its divisors is an integer number (14344318).

Almost surely, 2^57232711 is an apocalyptic number.

57232711 is a deficient number, since it is larger than the sum of its proper divisors (144561).

57232711 is a wasteful number, since it uses less digits than its factorization.

57232711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144560.

The product of its digits is 2940, while the sum is 28.

The square root of 57232711 is about 7565.2303996640. The cubic root of 57232711 is about 385.3731379887.

Adding to 57232711 its reverse (11723275), we get a palindrome (68955986).

The spelling of 57232711 in words is "fifty-seven million, two hundred thirty-two thousand, seven hundred eleven".