345249 has 16 divisors (see below), whose sum is σ = 539200. Its totient is φ = 217728.

The previous prime is 345229. The next prime is 345259. The reversal of 345249 is 942543.

345249 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 345249 - 2¹⁷ = 214177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 3⁷ + 4² + 2¹¹ + 5⁷ + 4⁹ + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177 + ... + 849.

It is an arithmetic number, because the mean of its divisors is an integer number (33700).

2³⁴⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

345249 is a deficient number, since it is larger than the sum of its proper divisors (193951).

345249 is a wasteful number, since it uses less digits than its factorization.

345249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 695 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 345249 is about 587.5789308680. The cubic root of 345249 is about 70.1526600255.

It can be divided in two parts, 345 and 249, that multiplied together give a triangular number (85905 = T₄₁₄).

The spelling of 345249 in words is "three hundred forty-five thousand, two hundred forty-nine".