155263 has 4 divisors (see below), whose sum is σ = 156520. Its totient is φ = 154008.

The previous prime is 155251. The next prime is 155269. The reversal of 155263 is 362551.

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 155263 - 2⁵ = 155231 is a prime.

It is a Duffinian number.

155263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420 + ... + 697.

It is an arithmetic number, because the mean of its divisors is an integer number (39130).

2¹⁵⁵²⁶³ is an apocalyptic number.

155263 is a deficient number, since it is larger than the sum of its proper divisors (1257).

155263 is a wasteful number, since it uses less digits than its factorization.

155263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its digits is 900, while the sum is 22.

The square root of 155263 is about 394.0342624696. The cubic root of 155263 is about 53.7472181722.

The spelling of 155263 in words is "one hundred fifty-five thousand, two hundred sixty-three".