345220153 has 4 divisors (see below), whose sum is σ = 345279220. Its totient is φ = 345161088.

The previous prime is 345220103. The next prime is 345220171. The reversal of 345220153 is 351022543.

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 226562704 + 118657449 = 15052^2 + 10893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345220153 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (345220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19668 + ... + 32821.

It is an arithmetic number, because the mean of its divisors is an integer number (86319805).

Almost surely, 2^345220153 is an apocalyptic number.

It is an amenable number.

345220153 is a deficient number, since it is larger than the sum of its proper divisors (59067).

345220153 is an equidigital number, since it uses as much as digits as its factorization.

345220153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59066.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 345220153 is about 18580.1009954198. The cubic root of 345220153 is about 701.5070612155.

Adding to 345220153 its reverse (351022543), we get a palindrome (696242696).

The spelling of 345220153 in words is "three hundred forty-five million, two hundred twenty thousand, one hundred fifty-three".