345422015 has 4 divisors (see below), whose sum is σ = 414506424. Its totient is φ = 276337608.

The previous prime is 345422009. The next prime is 345422017. The reversal of 345422015 is 510224543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510224543 = 487 ⋅1047689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345422015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345422017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34542197 + ... + 34542206.

It is an arithmetic number, because the mean of its divisors is an integer number (103626606).

Almost surely, 2^345422015 is an apocalyptic number.

345422015 is a deficient number, since it is larger than the sum of its proper divisors (69084409).

345422015 is an equidigital number, since it uses as much as digits as its factorization.

345422015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69084408.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 345422015 is about 18585.5324109911. The cubic root of 345422015 is about 701.6437662767.

Adding to 345422015 its reverse (510224543), we get a palindrome (855646558).

The spelling of 345422015 in words is "three hundred forty-five million, four hundred twenty-two thousand, fifteen".