145228865 has 16 divisors (see below), whose sum is σ = 178899840. Its totient is φ = 113139840.

The previous prime is 145228859. The next prime is 145228883. The reversal of 145228865 is 568822541.

It is a happy number.

It is not a de Polignac number, because 145228865 - 2⁴ = 145228849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27380 + ... + 32250.

It is an arithmetic number, because the mean of its divisors is an integer number (11181240).

Almost surely, 2^145228865 is an apocalyptic number.

It is an amenable number.

145228865 is a deficient number, since it is larger than the sum of its proper divisors (33670975).

145228865 is an equidigital number, since it uses as much as digits as its factorization.

145228865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032.

The product of its digits is 153600, while the sum is 41.

The square root of 145228865 is about 12051.0939337473. The cubic root of 145228865 is about 525.6350470994.

The spelling of 145228865 in words is "one hundred forty-five million, two hundred twenty-eight thousand, eight hundred sixty-five".