345523000 has 64 divisors (see below), whose sum is σ = 813758400. Its totient is φ = 137315200.

The previous prime is 345522979. The next prime is 345523001. The reversal of 345523000 is 325543.

It is a super-2 number, since 2×345523000² = 238772287058000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345523001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165966 + ... + 168034.

It is an arithmetic number, because the mean of its divisors is an integer number (12714975).

Almost surely, 2^345523000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345523000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406879200).

345523000 is an abundant number, since it is smaller than the sum of its proper divisors (468235400).

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

345523000 is a wasteful number, since it uses less digits than its factorization.

345523000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 345523000 is about 18588.2489761677. The cubic root of 345523000 is about 701.7121353912.

Adding to 345523000 its reverse (325543), we get a palindrome (345848543).

The spelling of 345523000 in words is "three hundred forty-five million, five hundred twenty-three thousand".