1355503 has 2 divisors, whose sum is σ = 1355504. Its totient is φ = 1355502.

The previous prime is 1355483. The next prime is 1355507. The reversal of 1355503 is 3055531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355503 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677751 + 677752.

It is an arithmetic number, because the mean of its divisors is an integer number (677752).

2^1355503 is an apocalyptic number.

1355503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355503 is an equidigital number, since it uses as much as digits as its factorization.

1355503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 1355503 is about 1164.2607096351. The cubic root of 1355503 is about 110.6709134110.

Subtracting from 1355503 its sum of digits (22), we obtain a triangular number (1355481 = T₁₆₄₆).

The spelling of 1355503 in words is "one million, three hundred fifty-five thousand, five hundred three".