155273271 has 4 divisors (see below), whose sum is σ = 207031032. Its totient is φ = 103515512.

The previous prime is 155273269. The next prime is 155273317. The reversal of 155273271 is 172372551.

It is a happy number.

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 155273271 - 2¹ = 155273269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155273231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25878876 + ... + 25878881.

It is an arithmetic number, because the mean of its divisors is an integer number (51757758).

Almost surely, 2^155273271 is an apocalyptic number.

155273271 is a deficient number, since it is larger than the sum of its proper divisors (51757761).

155273271 is an equidigital number, since it uses as much as digits as its factorization.

155273271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51757760.

The product of its digits is 14700, while the sum is 33.

The square root of 155273271 is about 12460.8695924482. The cubic root of 155273271 is about 537.4840331294.

The spelling of 155273271 in words is "one hundred fifty-five million, two hundred seventy-three thousand, two hundred seventy-one".