135557857 has 8 divisors (see below), whose sum is σ = 137636352. Its totient is φ = 133494000.

The previous prime is 135557843. The next prime is 135557879. The reversal of 135557857 is 758755531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135557857 - 2¹¹ = 135555809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135557657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15778 + ... + 22804.

It is an arithmetic number, because the mean of its divisors is an integer number (17204544).

Almost surely, 2^135557857 is an apocalyptic number.

It is an amenable number.

135557857 is a deficient number, since it is larger than the sum of its proper divisors (2078495).

135557857 is a wasteful number, since it uses less digits than its factorization.

135557857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7319.

The product of its digits is 735000, while the sum is 46.

The square root of 135557857 is about 11642.9316325400. The cubic root of 135557857 is about 513.6984218579.

It can be divided in two parts, 13555 and 7857, that added together give a palindrome (21412).

The spelling of 135557857 in words is "one hundred thirty-five million, five hundred fifty-seven thousand, eight hundred fifty-seven".