213352537 has 2 divisors, whose sum is σ = 213352538. Its totient is φ = 213352536.

The previous prime is 213352519. The next prime is 213352549. The reversal of 213352537 is 735253312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205377561 + 7974976 = 14331^2 + 2824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213352537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213352499 and 213352508.

It is not a weakly prime, because it can be changed into another prime (213352597) 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, 106676268 + 106676269.

It is an arithmetic number, because the mean of its divisors is an integer number (106676269).

Almost surely, 2^213352537 is an apocalyptic number.

It is an amenable number.

213352537 is a deficient number, since it is larger than the sum of its proper divisors (1).

213352537 is an equidigital number, since it uses as much as digits as its factorization.

213352537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 31.

The square root of 213352537 is about 14606.5922445997. The cubic root of 213352537 is about 597.5385613786.

The spelling of 213352537 in words is "two hundred thirteen million, three hundred fifty-two thousand, five hundred thirty-seven".