345519 has 16 divisors (see below), whose sum is σ = 522240. Its totient is φ = 225720.

The previous prime is 345517. The next prime is 345533. The reversal of 345519 is 915543.

It is not a de Polignac number, because 345519 - 2¹ = 345517 is a prime.

It is a super-2 number, since 2×345519² = 238766758722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 345492 and 345501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345511) 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 15 ways as a sum of consecutive naturals, for example, 1714 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (32640).

2³⁴⁵⁵¹⁹ is an apocalyptic number.

345519 is a deficient number, since it is larger than the sum of its proper divisors (176721).

345519 is a wasteful number, since it uses less digits than its factorization.

345519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 345519 is about 587.8086423318. The cubic root of 345519 is about 70.1709427555.

The spelling of 345519 in words is "three hundred forty-five thousand, five hundred nineteen".