145244503 has 4 divisors (see below), whose sum is σ = 145315800. Its totient is φ = 145173208.

The previous prime is 145244501. The next prime is 145244507. The reversal of 145244503 is 305442541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305442541 = 17209 ⋅17749.

It is a cyclic number.

It is not a de Polignac number, because 145244503 - 2¹ = 145244501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145244501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32500 + ... + 36697.

It is an arithmetic number, because the mean of its divisors is an integer number (36328950).

Almost surely, 2^145244503 is an apocalyptic number.

145244503 is a deficient number, since it is larger than the sum of its proper divisors (71297).

145244503 is an equidigital number, since it uses as much as digits as its factorization.

145244503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71296.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 145244503 is about 12051.7427370484. The cubic root of 145244503 is about 525.6539129216.

The spelling of 145244503 in words is "one hundred forty-five million, two hundred forty-four thousand, five hundred three".