155427 has 8 divisors (see below), whose sum is σ = 209664. Its totient is φ = 102408.

The previous prime is 155423. The next prime is 155443. The reversal of 155427 is 724551.

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

It is not a de Polignac number, because 155427 - 2² = 155423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155397 and 155406.

It is not an unprimeable number, because it can be changed into a prime (155423) 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, 58 + ... + 560.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2¹⁵⁵⁴²⁷ is an apocalyptic number.

155427 is a deficient number, since it is larger than the sum of its proper divisors (54237).

155427 is a wasteful number, since it uses less digits than its factorization.

155427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its digits is 1400, while the sum is 24.

The square root of 155427 is about 394.2423112757. The cubic root of 155427 is about 53.7661354118.

Subtracting from 155427 its sum of digits (24), we obtain a triangular number (155403 = T₅₅₇).

Adding to 155427 its reverse (724551), we get a palindrome (879978).

The spelling of 155427 in words is "one hundred fifty-five thousand, four hundred twenty-seven".