145983285 has 48 divisors (see below), whose sum is σ = 293544576. Its totient is φ = 65729664.

The previous prime is 145983281. The next prime is 145983293. The reversal of 145983285 is 582389541.

145983285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145983285 - 2² = 145983281 is a prime.

It is a super-3 number, since 3×145983285³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 145983285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145983281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17647 + ... + 24563.

It is an arithmetic number, because the mean of its divisors is an integer number (6115512).

Almost surely, 2^145983285 is an apocalyptic number.

145983285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145983285 is an abundant number, since it is smaller than the sum of its proper divisors (147561291).

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

145983285 is a wasteful number, since it uses less digits than its factorization.

145983285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002 (or 6999 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 145983285 is about 12082.3542821753. The cubic root of 145983285 is about 526.5436472718.

The spelling of 145983285 in words is "one hundred forty-five million, nine hundred eighty-three thousand, two hundred eighty-five".