133579 has 6 divisors (see below), whose sum is σ = 139020. Its totient is φ = 128340.

The previous prime is 133571. The next prime is 133583. The reversal of 133579 is 975331.

It is not a de Polignac number, because 133579 - 2³ = 133571 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (133571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 892 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (23170).

2¹³³⁵⁷⁹ is an apocalyptic number.

133579 is a deficient number, since it is larger than the sum of its proper divisors (5441).

133579 is an equidigital number, since it uses as much as digits as its factorization.

133579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 170 counting only the distinct ones).

The product of its digits is 2835, while the sum is 28.

The square root of 133579 is about 365.4846097991. The cubic root of 133579 is about 51.1186523564.

It can be divided in two parts, 13357 and 9, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 133579 in words is "one hundred thirty-three thousand, five hundred seventy-nine".