145251330 has 64 divisors (see below), whose sum is σ = 401995008. Its totient is φ = 32901120.

The previous prime is 145251313. The next prime is 145251367. The reversal of 145251330 is 33152541.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145251330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20670 + ... + 26790.

It is an arithmetic number, because the mean of its divisors is an integer number (6281172).

Almost surely, 2^145251330 is an apocalyptic number.

145251330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145251330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200997504).

145251330 is an abundant number, since it is smaller than the sum of its proper divisors (256743678).

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

145251330 is a wasteful number, since it uses less digits than its factorization.

145251330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 145251330 is about 12052.0259707652. The cubic root of 145251330 is about 525.6621486505.

The spelling of 145251330 in words is "one hundred forty-five million, two hundred fifty-one thousand, three hundred thirty".