145056215 has 4 divisors (see below), whose sum is σ = 174067464. Its totient is φ = 116044968.

The previous prime is 145056211. The next prime is 145056217. The reversal of 145056215 is 512650541.

It is a happy number.

145056215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512650541 = 13 ⋅39434657.

It is a cyclic number.

It is not a de Polignac number, because 145056215 - 2² = 145056211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145056211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14505617 + ... + 14505626.

It is an arithmetic number, because the mean of its divisors is an integer number (43516866).

Almost surely, 2^145056215 is an apocalyptic number.

145056215 is a deficient number, since it is larger than the sum of its proper divisors (29011249).

145056215 is an equidigital number, since it uses as much as digits as its factorization.

145056215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29011248.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 145056215 is about 12043.9285534248. The cubic root of 145056215 is about 525.4266705332.

The spelling of 145056215 in words is "one hundred forty-five million, fifty-six thousand, two hundred fifteen".