145103155 has 4 divisors (see below), whose sum is σ = 174123792. Its totient is φ = 116082520.

The previous prime is 145103137. The next prime is 145103191. The reversal of 145103155 is 551301541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551301541 = 7 ⋅78757363.

It is a de Polignac number, because none of the positive numbers 2^k-145103155 is a prime.

It is a Duffinian number.

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, 14510311 + ... + 14510320.

It is an arithmetic number, because the mean of its divisors is an integer number (43530948).

Almost surely, 2^145103155 is an apocalyptic number.

145103155 is a deficient number, since it is larger than the sum of its proper divisors (29020637).

145103155 is an equidigital number, since it uses as much as digits as its factorization.

145103155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29020636.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 145103155 is about 12045.8770955045. The cubic root of 145103155 is about 525.4833402136.

Adding to 145103155 its reverse (551301541), we get a palindrome (696404696).

The spelling of 145103155 in words is "one hundred forty-five million, one hundred three thousand, one hundred fifty-five".