145199250 has 192 divisors, whose sum is σ = 469497600. Its totient is φ = 33112800.

The previous prime is 145199231. The next prime is 145199267. The reversal of 145199250 is 52991541.

145199250 is a `hidden beast` number, since 1 + 4 + 519 + 92 + 50 = 666.

It is a nialpdrome in base 15.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 330531 + ... + 330969.

It is an arithmetic number, because the mean of its divisors is an integer number (2445300).

Almost surely, 2^145199250 is an apocalyptic number.

145199250 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 145199250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234748800).

145199250 is an abundant number, since it is smaller than the sum of its proper divisors (324298350).

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

145199250 is a wasteful number, since it uses less digits than its factorization.

145199250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 145199250 is about 12049.8651444736. The cubic root of 145199250 is about 525.5993155889.

The spelling of 145199250 in words is "one hundred forty-five million, one hundred ninety-nine thousand, two hundred fifty".