57521203 has 2 divisors, whose sum is σ = 57521204. Its totient is φ = 57521202.

The previous prime is 57521197. The next prime is 57521263. The reversal of 57521203 is 30212575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57521203 - 2⁵ = 57521171 is a prime.

It is not a weakly prime, because it can be changed into another prime (57521263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28760601 + 28760602.

It is an arithmetic number, because the mean of its divisors is an integer number (28760602).

Almost surely, 2^57521203 is an apocalyptic number.

57521203 is a deficient number, since it is larger than the sum of its proper divisors (1).

57521203 is an equidigital number, since it uses as much as digits as its factorization.

57521203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 57521203 is about 7584.2733996079. The cubic root of 57521203 is about 386.0195677660.

Adding to 57521203 its reverse (30212575), we get a palindrome (87733778).

The spelling of 57521203 in words is "fifty-seven million, five hundred twenty-one thousand, two hundred three".