345545015 has 4 divisors (see below), whose sum is σ = 414654024. Its totient is φ = 276436008.

The previous prime is 345544999. The next prime is 345545017. The reversal of 345545015 is 510545543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510545543 = 1193 ⋅427951.

It is a cyclic number.

It is not a de Polignac number, because 345545015 - 2⁴ = 345544999 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 (345545017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34554497 + ... + 34554506.

It is an arithmetic number, because the mean of its divisors is an integer number (103663506).

Almost surely, 2^345545015 is an apocalyptic number.

345545015 is a deficient number, since it is larger than the sum of its proper divisors (69109009).

345545015 is an equidigital number, since it uses as much as digits as its factorization.

345545015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69109008.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 345545015 is about 18588.8411419324. The cubic root of 345545015 is about 701.7270382723.

The spelling of 345545015 in words is "three hundred forty-five million, five hundred forty-five thousand, fifteen".