145332215 has 32 divisors (see below), whose sum is σ = 203295744. Its totient is φ = 97689600.

The previous prime is 145332211. The next prime is 145332223. The reversal of 145332215 is 512233541.

It is a happy number.

It is not a de Polignac number, because 145332215 - 2² = 145332211 is a prime.

It is a super-2 number, since 2×145332215² = 42242905433612450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145332211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 565367 + ... + 565623.

It is an arithmetic number, because the mean of its divisors is an integer number (6352992).

Almost surely, 2^145332215 is an apocalyptic number.

145332215 is a deficient number, since it is larger than the sum of its proper divisors (57963529).

145332215 is a wasteful number, since it uses less digits than its factorization.

145332215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its digits is 3600, while the sum is 26.

The square root of 145332215 is about 12055.3811636132. The cubic root of 145332215 is about 525.7597043678.

Adding to 145332215 its reverse (512233541), we get a palindrome (657565756).

The spelling of 145332215 in words is "one hundred forty-five million, three hundred thirty-two thousand, two hundred fifteen".