155279 has 4 divisors (see below), whose sum is σ = 160320. Its totient is φ = 150240.

The previous prime is 155269. The next prime is 155291. The reversal of 155279 is 972551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972551 = 499 ⋅1949.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155279 is a prime.

It is a super-2 number, since 2×155279² = 48223135682, which contains 22 as substring.

It is a Duffinian number.

155279 is a modest number, since divided by 279 gives 155 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155209) 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, 2474 + ... + 2535.

It is an arithmetic number, because the mean of its divisors is an integer number (40080).

2¹⁵⁵²⁷⁹ is an apocalyptic number.

155279 is a deficient number, since it is larger than the sum of its proper divisors (5041).

155279 is an equidigital number, since it uses as much as digits as its factorization.

155279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040.

The product of its digits is 3150, while the sum is 29.

The square root of 155279 is about 394.0545647496. The cubic root of 155279 is about 53.7490643428.

It can be divided in two parts, 155 and 279, that added together give a palindrome (434).

The spelling of 155279 in words is "one hundred fifty-five thousand, two hundred seventy-nine".