13050557 has 4 divisors (see below), whose sum is σ = 14054460. Its totient is φ = 12046656.

The previous prime is 13050553. The next prime is 13050589. The reversal of 13050557 is 75505031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1666681 + 11383876 = 1291^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 13050557 - 2² = 13050553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13050553) 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 in 3 ways as a sum of consecutive naturals, for example, 501932 + ... + 501957.

It is an arithmetic number, because the mean of its divisors is an integer number (3513615).

Almost surely, 2^13050557 is an apocalyptic number.

It is an amenable number.

13050557 is a deficient number, since it is larger than the sum of its proper divisors (1003903).

13050557 is a wasteful number, since it uses less digits than its factorization.

13050557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003902.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 13050557 is about 3612.5554667022. Note that the first 3 decimals coincide. The cubic root of 13050557 is about 235.4378858398.

Adding to 13050557 its reverse (75505031), we get a palindrome (88555588).

The spelling of 13050557 in words is "thirteen million, fifty thousand, five hundred fifty-seven".