145003215 has 16 divisors (see below), whose sum is σ = 265148928. Its totient is φ = 66287136.

The previous prime is 145003207. The next prime is 145003249. The reversal of 145003215 is 512300541.

It is not a de Polignac number, because 145003215 - 2³ = 145003207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 145003191 and 145003200.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 690387 + ... + 690596.

It is an arithmetic number, because the mean of its divisors is an integer number (16571808).

Almost surely, 2^145003215 is an apocalyptic number.

145003215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145003215 is a deficient number, since it is larger than the sum of its proper divisors (120145713).

145003215 is a wasteful number, since it uses less digits than its factorization.

145003215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380998.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 145003215 is about 12041.7280736612. The cubic root of 145003215 is about 525.3626700447.

Adding to 145003215 its reverse (512300541), we get a palindrome (657303756).

The spelling of 145003215 in words is "one hundred forty-five million, three thousand, two hundred fifteen".