1953503 has 2 divisors, whose sum is σ = 1953504. Its totient is φ = 1953502.

The previous prime is 1953493. The next prime is 1953509. The reversal of 1953503 is 3053591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1953503 - 2¹⁰ = 1952479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976751 + 976752.

It is an arithmetic number, because the mean of its divisors is an integer number (976752).

2^1953503 is an apocalyptic number.

1953503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953503 is an equidigital number, since it uses as much as digits as its factorization.

1953503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 1953503 is about 1397.6777167860. The cubic root of 1953503 is about 125.0080634798.

The spelling of 1953503 in words is "one million, nine hundred fifty-three thousand, five hundred three".