145251215 has 8 divisors (see below), whose sum is σ = 177256080. Its totient is φ = 114231232.

The previous prime is 145251209. The next prime is 145251229. The reversal of 145251215 is 512152541.

145251215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145251215 - 2¹⁰ = 145250191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245894 + ... + 246483.

It is an arithmetic number, because the mean of its divisors is an integer number (22157010).

Almost surely, 2^145251215 is an apocalyptic number.

145251215 is a deficient number, since it is larger than the sum of its proper divisors (32004865).

145251215 is an equidigital number, since it uses as much as digits as its factorization.

145251215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492441.

The product of its digits is 2000, while the sum is 26.

The square root of 145251215 is about 12052.0211997822. The cubic root of 145251215 is about 525.6620099228.

The spelling of 145251215 in words is "one hundred forty-five million, two hundred fifty-one thousand, two hundred fifteen".