145811503 has 2 divisors, whose sum is σ = 145811504. Its totient is φ = 145811502.

The previous prime is 145811483. The next prime is 145811527. The reversal of 145811503 is 305118541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145811503 - 2¹³ = 145803311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145811563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72905751 + 72905752.

It is an arithmetic number, because the mean of its divisors is an integer number (72905752).

Almost surely, 2^145811503 is an apocalyptic number.

145811503 is a deficient number, since it is larger than the sum of its proper divisors (1).

145811503 is an equidigital number, since it uses as much as digits as its factorization.

145811503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 145811503 is about 12075.2433929921. The cubic root of 145811503 is about 526.3370340682.

The spelling of 145811503 in words is "one hundred forty-five million, eight hundred eleven thousand, five hundred three".