345155250 has 256 divisors, whose sum is σ = 1048080384. Its totient is φ = 74624000.

The previous prime is 345155201. The next prime is 345155269. The reversal of 345155250 is 52551543.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 3225697 + ... + 3225803.

It is an arithmetic number, because the mean of its divisors is an integer number (4094064).

Almost surely, 2^345155250 is an apocalyptic number.

345155250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 345155250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524040192).

345155250 is an abundant number, since it is smaller than the sum of its proper divisors (702925134).

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

345155250 is a wasteful number, since it uses less digits than its factorization.

345155250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 345155250 is about 18578.3543404684. The cubic root of 345155250 is about 701.4630962596.

The spelling of 345155250 in words is "three hundred forty-five million, one hundred fifty-five thousand, two hundred fifty".