145002503 has 4 divisors (see below), whose sum is σ = 153532080. Its totient is φ = 136472928.

The previous prime is 145002499. The next prime is 145002521. The reversal of 145002503 is 305200541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145002503 - 2² = 145002499 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 (145002563) 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, 4264763 + ... + 4264796.

It is an arithmetic number, because the mean of its divisors is an integer number (38383020).

Almost surely, 2^145002503 is an apocalyptic number.

145002503 is a deficient number, since it is larger than the sum of its proper divisors (8529577).

145002503 is an equidigital number, since it uses as much as digits as its factorization.

145002503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8529576.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 145002503 is about 12041.6985097618. The cubic root of 145002503 is about 525.3618101584.

The spelling of 145002503 in words is "one hundred forty-five million, two thousand, five hundred three".