213535057 has 2 divisors, whose sum is σ = 213535058. Its totient is φ = 213535056.

The previous prime is 213535027. The next prime is 213535067. The reversal of 213535057 is 750535312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 105042001 = 10416^2 + 10249^2 .

It is a cyclic number.

It is not a de Polignac number, because 213535057 - 2¹⁹ = 213010769 is a prime.

It is not a weakly prime, because it can be changed into another prime (213535027) 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 as a sum of consecutive naturals, namely, 106767528 + 106767529.

It is an arithmetic number, because the mean of its divisors is an integer number (106767529).

Almost surely, 2^213535057 is an apocalyptic number.

It is an amenable number.

213535057 is a deficient number, since it is larger than the sum of its proper divisors (1).

213535057 is an equidigital number, since it uses as much as digits as its factorization.

213535057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 213535057 is about 14612.8387728052. The cubic root of 213535057 is about 597.7089080015.

The spelling of 213535057 in words is "two hundred thirteen million, five hundred thirty-five thousand, fifty-seven".