155000027 has 8 divisors (see below), whose sum is σ = 190769376. Its totient is φ = 122637312.

The previous prime is 155000023. The next prime is 155000039. The reversal of 155000027 is 720000551.

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

It is not a de Polignac number, because 155000027 - 2² = 155000023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154999972 and 155000008.

It is not an unprimeable number, because it can be changed into a prime (155000023) 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, 851558 + ... + 851739.

It is an arithmetic number, because the mean of its divisors is an integer number (23846172).

Almost surely, 2^155000027 is an apocalyptic number.

155000027 is a deficient number, since it is larger than the sum of its proper divisors (35769349).

155000027 is a wasteful number, since it uses less digits than its factorization.

155000027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703317.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 155000027 is about 12449.9006823348. The cubic root of 155000027 is about 537.1685666849.

Adding to 155000027 its reverse (720000551), we get a palindrome (875000578).

The spelling of 155000027 in words is "one hundred fifty-five million, twenty-seven", and thus it is an aban number.