155579 has 2 divisors, whose sum is σ = 155580. Its totient is φ = 155578.

The previous prime is 155569. The next prime is 155581. The reversal of 155579 is 975551.

It is a strong prime.

It is an emirp because it is prime and its reverse (975551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155579 - 2¹² = 151483 is a prime.

Together with 155581, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (155509) 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 as a sum of consecutive naturals, namely, 77789 + 77790.

It is an arithmetic number, because the mean of its divisors is an integer number (77790).

2¹⁵⁵⁵⁷⁹ is an apocalyptic number.

155579 is a deficient number, since it is larger than the sum of its proper divisors (1).

155579 is an equidigital number, since it uses as much as digits as its factorization.

155579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7875, while the sum is 32.

The square root of 155579 is about 394.4350390115. The cubic root of 155579 is about 53.7836565845.

The spelling of 155579 in words is "one hundred fifty-five thousand, five hundred seventy-nine".