145540503 has 8 divisors (see below), whose sum is σ = 215615600. Its totient is φ = 97026984.

The previous prime is 145540501. The next prime is 145540537. The reversal of 145540503 is 305045541.

145540503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145540503 - 2¹ = 145540501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5390389 = 145540503 / (1 + 4 + 5 + 5 + 4 + 0 + 5 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145540501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695168 + ... + 2695221.

It is an arithmetic number, because the mean of its divisors is an integer number (26951950).

Almost surely, 2^145540503 is an apocalyptic number.

145540503 is a deficient number, since it is larger than the sum of its proper divisors (70075097).

145540503 is an equidigital number, since it uses as much as digits as its factorization.

145540503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390398 (or 5390392 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 145540503 is about 12064.0168683569. The cubic root of 145540503 is about 526.0107548390.

The spelling of 145540503 in words is "one hundred forty-five million, five hundred forty thousand, five hundred three".