13429557 has 20 divisors (see below), whose sum is σ = 20608236. Its totient is φ = 8709120.

The previous prime is 13429543. The next prime is 13429567. The reversal of 13429557 is 75592431.

It can be written as a sum of positive squares in 2 ways, for example, as 11329956 + 2099601 = 3366^2 + 1449^2 .

It is not a de Polignac number, because 13429557 - 2⁸ = 13429301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13429567) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 757 + ... + 5237.

Almost surely, 2^13429557 is an apocalyptic number.

It is an amenable number.

13429557 is a deficient number, since it is larger than the sum of its proper divisors (7178679).

13429557 is an equidigital number, since it uses as much as digits as its factorization.

13429557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530 (or 4521 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 13429557 is about 3664.6359982951. The cubic root of 13429557 is about 237.6952824153.

The spelling of 13429557 in words is "thirteen million, four hundred twenty-nine thousand, five hundred fifty-seven".