145555330 has 32 divisors (see below), whose sum is σ = 270935280. Its totient is φ = 56263680.

The previous prime is 145555303. The next prime is 145555337. The reversal of 145555330 is 33555541.

It can be written as a sum of positive squares in 8 ways, for example, as 65076489 + 80478841 = 8067^2 + 8971^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145555292 and 145555301.

It is not an unprimeable number, because it can be changed into a prime (145555337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43062 + ... + 46318.

Almost surely, 2^145555330 is an apocalyptic number.

145555330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145555330 is a deficient number, since it is larger than the sum of its proper divisors (125379950).

145555330 is a wasteful number, since it uses less digits than its factorization.

145555330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 145555330 is about 12064.6313661048. The cubic root of 145555330 is about 526.0286167548.

The spelling of 145555330 in words is "one hundred forty-five million, five hundred fifty-five thousand, three hundred thirty".