13709057 has 2 divisors, whose sum is σ = 13709058. Its totient is φ = 13709056.

The previous prime is 13709041. The next prime is 13709117. The reversal of 13709057 is 75090731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11723776 + 1985281 = 3424^2 + 1409^2 .

It is an emirp because it is prime and its reverse (75090731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13709057 - 2⁴ = 13709041 is a prime.

It is not a weakly prime, because it can be changed into another prime (13709557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6854528 + 6854529.

It is an arithmetic number, because the mean of its divisors is an integer number (6854529).

Almost surely, 2^13709057 is an apocalyptic number.

It is an amenable number.

13709057 is a deficient number, since it is larger than the sum of its proper divisors (1).

13709057 is an equidigital number, since it uses as much as digits as its factorization.

13709057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 13709057 is about 3702.5743746750. The cubic root of 13709057 is about 239.3329684398.

Adding to 13709057 its reverse (75090731), we get a palindrome (88799788).

The spelling of 13709057 in words is "thirteen million, seven hundred nine thousand, fifty-seven".