155979055 has 8 divisors (see below), whose sum is σ = 187254000. Its totient is φ = 124730496.

The previous prime is 155978983. The next prime is 155979059. The reversal of 155979055 is 550979551.

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 155979055 - 2¹⁷ = 155847983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155978996 and 155979014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155979059) 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 7 ways as a sum of consecutive naturals, for example, 10396 + ... + 20494.

It is an arithmetic number, because the mean of its divisors is an integer number (23406750).

Almost surely, 2^155979055 is an apocalyptic number.

155979055 is a deficient number, since it is larger than the sum of its proper divisors (31274945).

155979055 is a wasteful number, since it uses less digits than its factorization.

155979055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13193.

The product of its (nonzero) digits is 354375, while the sum is 46.

The square root of 155979055 is about 12489.1574976057. The cubic root of 155979055 is about 538.2971679535.

The spelling of 155979055 in words is "one hundred fifty-five million, nine hundred seventy-nine thousand, fifty-five".