145021115 has 16 divisors (see below), whose sum is σ = 177487200. Its totient is φ = 113720832.

The previous prime is 145021099. The next prime is 145021133. The reversal of 145021115 is 511120541.

145021115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145021115 - 2⁴ = 145021099 is a prime.

It is a super-2 number, since 2×145021115² = 42062247591686450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174521 + ... + 175349.

It is an arithmetic number, because the mean of its divisors is an integer number (11092950).

Almost surely, 2^145021115 is an apocalyptic number.

145021115 is a deficient number, since it is larger than the sum of its proper divisors (32466085).

145021115 is an equidigital number, since it uses as much as digits as its factorization.

145021115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 145021115 is about 12042.4712995298. The cubic root of 145021115 is about 525.3842870479.

Adding to 145021115 its reverse (511120541), we get a palindrome (656141656).

The spelling of 145021115 in words is "one hundred forty-five million, twenty-one thousand, one hundred fifteen".