57103213 has 2 divisors, whose sum is σ = 57103214. Its totient is φ = 57103212.

The previous prime is 57103199. The next prime is 57103219. The reversal of 57103213 is 31230175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56580484 + 522729 = 7522^2 + 723^2 .

It is a cyclic number.

It is not a de Polignac number, because 57103213 - 2²⁵ = 23548781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57103219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28551606 + 28551607.

It is an arithmetic number, because the mean of its divisors is an integer number (28551607).

Almost surely, 2^57103213 is an apocalyptic number.

It is an amenable number.

57103213 is a deficient number, since it is larger than the sum of its proper divisors (1).

57103213 is an equidigital number, since it uses as much as digits as its factorization.

57103213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 57103213 is about 7556.6667916483. Note that the first 3 decimals coincide. The cubic root of 57103213 is about 385.0822627388.

Adding to 57103213 its reverse (31230175), we get a palindrome (88333388).

The spelling of 57103213 in words is "fifty-seven million, one hundred three thousand, two hundred thirteen".