1545503 has 2 divisors, whose sum is σ = 1545504. Its totient is φ = 1545502.

The previous prime is 1545499. The next prime is 1545529. The reversal of 1545503 is 3055451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1545503 - 2² = 1545499 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545553) 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, 772751 + 772752.

It is an arithmetic number, because the mean of its divisors is an integer number (772752).

2^1545503 is an apocalyptic number.

1545503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545503 is an equidigital number, since it uses as much as digits as its factorization.

1545503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1545503 is about 1243.1826092735. The cubic root of 1545503 is about 115.6174227321.

It can be divided in two parts, 1545 and 503, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1545503 in words is "one million, five hundred forty-five thousand, five hundred three".