1157503 has 2 divisors, whose sum is σ = 1157504. Its totient is φ = 1157502.

The previous prime is 1157491. The next prime is 1157531. The reversal of 1157503 is 3057511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157503 is a prime.

1157503 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157203) 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, 578751 + 578752.

It is an arithmetic number, because the mean of its divisors is an integer number (578752).

2^1157503 is an apocalyptic number.

1157503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157503 is an equidigital number, since it uses as much as digits as its factorization.

1157503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 1157503 is about 1075.8731337848. The cubic root of 1157503 is about 104.9963112839.

Subtracting from 1157503 its sum of digits (22), we obtain a triangular number (1157481 = T₁₅₂₁).

The spelling of 1157503 in words is "one million, one hundred fifty-seven thousand, five hundred three".