155156271 has 8 divisors (see below), whose sum is σ = 213548544. Its totient is φ = 100100760.

The previous prime is 155156251. The next prime is 155156273. The reversal of 155156271 is 172651551.

It is a happy number.

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

It is not a de Polignac number, because 155156271 - 2⁷ = 155156143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155156273) 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, 834081 + ... + 834266.

It is an arithmetic number, because the mean of its divisors is an integer number (26693568).

Almost surely, 2^155156271 is an apocalyptic number.

155156271 is a deficient number, since it is larger than the sum of its proper divisors (58392273).

155156271 is a wasteful number, since it uses less digits than its factorization.

155156271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668381.

The product of its digits is 10500, while the sum is 33.

The square root of 155156271 is about 12456.1740113086. The cubic root of 155156271 is about 537.3489992994.

The spelling of 155156271 in words is "one hundred fifty-five million, one hundred fifty-six thousand, two hundred seventy-one".