145219885 has 8 divisors (see below), whose sum is σ = 174525336. Its totient is φ = 116001600.

The previous prime is 145219873. The next prime is 145219889. The reversal of 145219885 is 588912541.

145219885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 78340201 + 66879684 = 8851^2 + 8178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145219885 - 2⁵ = 145219853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145219889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18066 + ... + 24835.

It is an arithmetic number, because the mean of its divisors is an integer number (21815667).

Almost surely, 2^145219885 is an apocalyptic number.

It is an amenable number.

145219885 is a deficient number, since it is larger than the sum of its proper divisors (29305451).

145219885 is an equidigital number, since it uses as much as digits as its factorization.

145219885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43583.

The product of its digits is 115200, while the sum is 43.

The square root of 145219885 is about 12050.7213477036. The cubic root of 145219885 is about 525.6242129354.

The spelling of 145219885 in words is "one hundred forty-five million, two hundred nineteen thousand, eight hundred eighty-five".