145581503 has 2 divisors, whose sum is σ = 145581504. Its totient is φ = 145581502.

The previous prime is 145581433. The next prime is 145581517. The reversal of 145581503 is 305185541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145581503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145581503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145581803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72790751 + 72790752.

It is an arithmetic number, because the mean of its divisors is an integer number (72790752).

Almost surely, 2^145581503 is an apocalyptic number.

145581503 is a deficient number, since it is larger than the sum of its proper divisors (1).

145581503 is an equidigital number, since it uses as much as digits as its factorization.

145581503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 145581503 is about 12065.7160168802. The cubic root of 145581503 is about 526.0601441056.

It can be divided in two parts, 14558 and 1503, that added together give a palindrome (16061).

The spelling of 145581503 in words is "one hundred forty-five million, five hundred eighty-one thousand, five hundred three".