57432213 has 16 divisors (see below), whose sum is σ = 85203840. Its totient is φ = 38234592.

The previous prime is 57432203. The next prime is 57432223. The reversal of 57432213 is 31223475.

57432213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57432203) and next prime (57432223).

It is not a de Polignac number, because 57432213 - 2¹⁷ = 57301141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57432203) 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 15 ways as a sum of consecutive naturals, for example, 31320 + ... + 33102.

It is an arithmetic number, because the mean of its divisors is an integer number (5325240).

Almost surely, 2^57432213 is an apocalyptic number.

It is an amenable number.

57432213 is a deficient number, since it is larger than the sum of its proper divisors (27771627).

57432213 is a wasteful number, since it uses less digits than its factorization.

57432213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985 (or 2979 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 57432213 is about 7578.4043835098. The cubic root of 57432213 is about 385.8203970844.

Adding to 57432213 its reverse (31223475), we get a palindrome (88655688).

The spelling of 57432213 in words is "fifty-seven million, four hundred thirty-two thousand, two hundred thirteen".