155879555 has 8 divisors (see below), whose sum is σ = 201444432. Its totient is φ = 115111008.

The previous prime is 155879551. The next prime is 155879573. The reversal of 155879555 is 555978551.

It is a happy number.

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 155879555 - 2² = 155879551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155879551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199009 + ... + 1199138.

It is an arithmetic number, because the mean of its divisors is an integer number (25180554).

Almost surely, 2^155879555 is an apocalyptic number.

155879555 is a deficient number, since it is larger than the sum of its proper divisors (45564877).

155879555 is a wasteful number, since it uses less digits than its factorization.

155879555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398165.

The product of its digits is 1575000, while the sum is 50.

The square root of 155879555 is about 12485.1734068855. The cubic root of 155879555 is about 538.1826825799.

The spelling of 155879555 in words is "one hundred fifty-five million, eight hundred seventy-nine thousand, five hundred fifty-five".