57231811 has 8 divisors (see below), whose sum is σ = 70439264. Its totient is φ = 45282240.

The previous prime is 57231799. The next prime is 57231817. The reversal of 57231811 is 11813275.

57231811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57231811 - 2¹³ = 57223619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57231811.

It is not an unprimeable number, because it can be changed into a prime (57231817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314370 + ... + 314551.

It is an arithmetic number, because the mean of its divisors is an integer number (8804908).

Almost surely, 2^57231811 is an apocalyptic number.

57231811 is a deficient number, since it is larger than the sum of its proper divisors (13207453).

57231811 is a wasteful number, since it uses less digits than its factorization.

57231811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628941.

The product of its digits is 1680, while the sum is 28.

The square root of 57231811 is about 7565.1709167738. The cubic root of 57231811 is about 385.3711179455.

The spelling of 57231811 in words is "fifty-seven million, two hundred thirty-one thousand, eight hundred eleven".