13204157 has 2 divisors, whose sum is σ = 13204158. Its totient is φ = 13204156.

The previous prime is 13204123. The next prime is 13204199. The reversal of 13204157 is 75140231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13039321 + 164836 = 3611^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 13204157 - 2⁸ = 13203901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13204117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6602078 + 6602079.

It is an arithmetic number, because the mean of its divisors is an integer number (6602079).

Almost surely, 2^13204157 is an apocalyptic number.

It is an amenable number.

13204157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13204157 is an equidigital number, since it uses as much as digits as its factorization.

13204157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13204157 is about 3633.7524681794. The cubic root of 13204157 is about 236.3579565024.

Adding to 13204157 its reverse (75140231), we get a palindrome (88344388).

The spelling of 13204157 in words is "thirteen million, two hundred four thousand, one hundred fifty-seven".