145855218 has 16 divisors (see below), whose sum is σ = 292998240. Its totient is φ = 48403776.

The previous prime is 145855201. The next prime is 145855219. The reversal of 145855218 is 812558541.

It is not an unprimeable number, because it can be changed into a prime (145855219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52183 + ... + 54906.

It is an arithmetic number, because the mean of its divisors is an integer number (18312390).

Almost surely, 2^145855218 is an apocalyptic number.

145855218 is an abundant number, since it is smaller than the sum of its proper divisors (147143022).

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

145855218 is a wasteful number, since it uses less digits than its factorization.

145855218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107321.

The product of its digits is 64000, while the sum is 39.

The square root of 145855218 is about 12077.0533657842. The cubic root of 145855218 is about 526.3896282828.

The spelling of 145855218 in words is "one hundred forty-five million, eight hundred fifty-five thousand, two hundred eighteen".