145335215 has 4 divisors (see below), whose sum is σ = 174402264. Its totient is φ = 116268168.

The previous prime is 145335209. The next prime is 145335221. The reversal of 145335215 is 512533541.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (145335209) and next prime (145335221).

It is a cyclic number.

It is not a de Polignac number, because 145335215 - 2¹² = 145331119 is a prime.

It is a super-2 number, since 2×145335215² = 42244649438192450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14533517 + ... + 14533526.

It is an arithmetic number, because the mean of its divisors is an integer number (43600566).

Almost surely, 2^145335215 is an apocalyptic number.

145335215 is a deficient number, since it is larger than the sum of its proper divisors (29067049).

145335215 is an equidigital number, since it uses as much as digits as its factorization.

145335215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29067048.

The product of its digits is 9000, while the sum is 29.

The square root of 145335215 is about 12055.5055887341. The cubic root of 145335215 is about 525.7633219834.

Adding to 145335215 its reverse (512533541), we get a palindrome (657868756).

The spelling of 145335215 in words is "one hundred forty-five million, three hundred thirty-five thousand, two hundred fifteen".