145116245 has 4 divisors (see below), whose sum is σ = 174139500. Its totient is φ = 116092992.

The previous prime is 145116227. The next prime is 145116247. The reversal of 145116245 is 542611541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542611541 = 7673 ⋅70717.

It can be written as a sum of positive squares in 2 ways, for example, as 64995844 + 80120401 = 8062^2 + 8951^2 .

It is a cyclic number.

It is not a de Polignac number, because 145116245 - 2⁸ = 145115989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145116247) 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, 14511620 + ... + 14511629.

It is an arithmetic number, because the mean of its divisors is an integer number (43534875).

Almost surely, 2^145116245 is an apocalyptic number.

It is an amenable number.

145116245 is a deficient number, since it is larger than the sum of its proper divisors (29023255).

145116245 is an equidigital number, since it uses as much as digits as its factorization.

145116245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29023254.

The product of its digits is 4800, while the sum is 29.

The square root of 145116245 is about 12046.4204226816. The cubic root of 145116245 is about 525.4991413175.

Adding to 145116245 its reverse (542611541), we get a palindrome (687727786).

The spelling of 145116245 in words is "one hundred forty-five million, one hundred sixteen thousand, two hundred forty-five".