249355 has 4 divisors (see below), whose sum is σ = 299232. Its totient is φ = 199480.

The previous prime is 249341. The next prime is 249367. The reversal of 249355 is 553942.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-249355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24931 + ... + 24940.

It is an arithmetic number, because the mean of its divisors is an integer number (74808).

2²⁴⁹³⁵⁵ is an apocalyptic number.

249355 is a deficient number, since it is larger than the sum of its proper divisors (49877).

249355 is an equidigital number, since it uses as much as digits as its factorization.

249355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49876.

The product of its digits is 5400, while the sum is 28.

The square root of 249355 is about 499.3545834375. The cubic root of 249355 is about 62.9418292308.

The spelling of 249355 in words is "two hundred forty-nine thousand, three hundred fifty-five".