213439553 has 2 divisors, whose sum is σ = 213439554. Its totient is φ = 213439552.

The previous prime is 213439543. The next prime is 213439571. The reversal of 213439553 is 355934312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148669249 + 64770304 = 12193^2 + 8048^2 .

It is a cyclic number.

It is not a de Polignac number, because 213439553 - 2¹⁰ = 213438529 is a prime.

It is not a weakly prime, because it can be changed into another prime (213439543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106719776 + 106719777.

It is an arithmetic number, because the mean of its divisors is an integer number (106719777).

Almost surely, 2^213439553 is an apocalyptic number.

It is an amenable number.

213439553 is a deficient number, since it is larger than the sum of its proper divisors (1).

213439553 is an equidigital number, since it uses as much as digits as its factorization.

213439553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 213439553 is about 14609.5705960168. The cubic root of 213439553 is about 597.6197858612.

The spelling of 213439553 in words is "two hundred thirteen million, four hundred thirty-nine thousand, five hundred fifty-three".