145111215 has 16 divisors (see below), whose sum is σ = 240184800. Its totient is φ = 74723712.

The previous prime is 145111171. The next prime is 145111223. The reversal of 145111215 is 512111541.

145111215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145111215 - 2¹² = 145107119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145111191 and 145111200.

It is a congruent number.

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, 166360 + ... + 167229.

It is an arithmetic number, because the mean of its divisors is an integer number (15011550).

Almost surely, 2^145111215 is an apocalyptic number.

145111215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145111215 is a deficient number, since it is larger than the sum of its proper divisors (95073585).

145111215 is a wasteful number, since it uses less digits than its factorization.

145111215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333626.

The product of its digits is 200, while the sum is 21.

The square root of 145111215 is about 12046.2116451605. The cubic root of 145111215 is about 525.4930696535.

Adding to 145111215 its reverse (512111541), we get a palindrome (657222756).

The spelling of 145111215 in words is "one hundred forty-five million, one hundred eleven thousand, two hundred fifteen".