13250557 has 2 divisors, whose sum is σ = 13250558. Its totient is φ = 13250556.

The previous prime is 13250537. The next prime is 13250563. The reversal of 13250557 is 75505231.

13250557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8696601 + 4553956 = 2949^2 + 2134^2 .

It is a cyclic number.

It is not a de Polignac number, because 13250557 - 2¹⁹ = 12726269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13250537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6625278 + 6625279.

It is an arithmetic number, because the mean of its divisors is an integer number (6625279).

Almost surely, 2^13250557 is an apocalyptic number.

It is an amenable number.

13250557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13250557 is an equidigital number, since it uses as much as digits as its factorization.

13250557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 13250557 is about 3640.1314536703. The cubic root of 13250557 is about 236.6344903246.

Adding to 13250557 its reverse (75505231), we get a palindrome (88755788).

The spelling of 13250557 in words is "thirteen million, two hundred fifty thousand, five hundred fifty-seven".