145513145 has 4 divisors (see below), whose sum is σ = 174615780. Its totient is φ = 116410512.

The previous prime is 145513139. The next prime is 145513169. The reversal of 145513145 is 541315541.

145513145 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: 541315541 = 13 ⋅41639657.

It can be written as a sum of positive squares in 2 ways, for example, as 40819321 + 104693824 = 6389^2 + 10232^2 .

It is a cyclic number.

It is not a de Polignac number, because 145513145 - 2⁸ = 145512889 is a prime.

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, 14551310 + ... + 14551319.

It is an arithmetic number, because the mean of its divisors is an integer number (43653945).

Almost surely, 2^145513145 is an apocalyptic number.

It is an amenable number.

145513145 is a deficient number, since it is larger than the sum of its proper divisors (29102635).

145513145 is an equidigital number, since it uses as much as digits as its factorization.

145513145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29102634.

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

The square root of 145513145 is about 12062.8829472892. The cubic root of 145513145 is about 525.9777937875.

Adding to 145513145 its reverse (541315541), we get a palindrome (686828686).

The spelling of 145513145 in words is "one hundred forty-five million, five hundred thirteen thousand, one hundred forty-five".