345013253 has 4 divisors (see below), whose sum is σ = 371552748. Its totient is φ = 318473760.

The previous prime is 345013243. The next prime is 345013301. The reversal of 345013253 is 352310543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 199883044 + 145130209 = 14138^2 + 12047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345013253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345013243) 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, 13269728 + ... + 13269753.

It is an arithmetic number, because the mean of its divisors is an integer number (92888187).

Almost surely, 2^345013253 is an apocalyptic number.

It is an amenable number.

345013253 is a deficient number, since it is larger than the sum of its proper divisors (26539495).

345013253 is a wasteful number, since it uses less digits than its factorization.

345013253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26539494.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 345013253 is about 18574.5323763480. The cubic root of 345013253 is about 701.3668890044.

Adding to 345013253 its reverse (352310543), we get a palindrome (697323796).

The spelling of 345013253 in words is "three hundred forty-five million, thirteen thousand, two hundred fifty-three".