57408213 has 8 divisors (see below), whose sum is σ = 77687008. Its totient is φ = 37700784.

The previous prime is 57408203. The next prime is 57408217. The reversal of 57408213 is 31280475.

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

It is a de Polignac number, because none of the positive numbers 2^k-57408213 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 (57408217) 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, 142606 + ... + 143007.

It is an arithmetic number, because the mean of its divisors is an integer number (9710876).

Almost surely, 2^57408213 is an apocalyptic number.

It is an amenable number.

57408213 is a deficient number, since it is larger than the sum of its proper divisors (20278795).

57408213 is a wasteful number, since it uses less digits than its factorization.

57408213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285683.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 57408213 is about 7576.8207712734. The cubic root of 57408213 is about 385.7666468794.

Adding to 57408213 its reverse (31280475), we get a palindrome (88688688).

The spelling of 57408213 in words is "fifty-seven million, four hundred eight thousand, two hundred thirteen".