345240055 has 4 divisors (see below), whose sum is σ = 414288072. Its totient is φ = 276192040.

The previous prime is 345240047. The next prime is 345240059. The reversal of 345240055 is 550042543.

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

It is not a de Polignac number, because 345240055 - 2³ = 345240047 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 (345240059) 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, 34524001 + ... + 34524010.

It is an arithmetic number, because the mean of its divisors is an integer number (103572018).

Almost surely, 2^345240055 is an apocalyptic number.

345240055 is a deficient number, since it is larger than the sum of its proper divisors (69048017).

345240055 is an equidigital number, since it uses as much as digits as its factorization.

345240055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69048016.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 345240055 is about 18580.6365606779. The cubic root of 345240055 is about 701.5205416232.

Adding to 345240055 its reverse (550042543), we get a palindrome (895282598).

The spelling of 345240055 in words is "three hundred forty-five million, two hundred forty thousand, fifty-five".