345521152 has 44 divisors (see below), whose sum is σ = 693294336. Its totient is φ = 172113920.

The previous prime is 345521123. The next prime is 345521173. The reversal of 345521152 is 251125543.

It is a self number, because there is not a number n which added to its sum of digits gives 345521152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391752 + ... + 392632.

Almost surely, 2^345521152 is an apocalyptic number.

345521152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345521152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346647168).

345521152 is an abundant number, since it is smaller than the sum of its proper divisors (347773184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345521152 is an equidigital number, since it uses as much as digits as its factorization.

345521152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1266 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 345521152 is about 18588.1992672771. The cubic root of 345521152 is about 701.7108843733.

Adding to 345521152 its reverse (251125543), we get a palindrome (596646695).

The spelling of 345521152 in words is "three hundred forty-five million, five hundred twenty-one thousand, one hundred fifty-two".