155147 has 4 divisors (see below), whose sum is σ = 158496. Its totient is φ = 151800.

The previous prime is 155137. The next prime is 155153. The reversal of 155147 is 741551.

155147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155147 - 2⁶ = 155083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (39624).

2¹⁵⁵¹⁴⁷ is an apocalyptic number.

155147 is a deficient number, since it is larger than the sum of its proper divisors (3349).

155147 is an equidigital number, since it uses as much as digits as its factorization.

155147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348.

The product of its digits is 700, while the sum is 23.

The square root of 155147 is about 393.8870396446. The cubic root of 155147 is about 53.7338296409.

Adding to 155147 its reverse (741551), we get a palindrome (896698).

The spelling of 155147 in words is "one hundred fifty-five thousand, one hundred forty-seven".