1355042503 has 4 divisors (see below), whose sum is σ = 1360665328. Its totient is φ = 1349419680.

The previous prime is 1355042483. The next prime is 1355042537. The reversal of 1355042503 is 3052405531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3052405531 = 7 ⋅436057933.

It is a cyclic number.

It is not a de Polignac number, because 1355042503 - 2⁹ = 1355041991 is a prime.

It is a super-2 number, since 2×1355042503² = 3672280369873010018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355049503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811051 + ... + 2811532.

It is an arithmetic number, because the mean of its divisors is an integer number (340166332).

Almost surely, 2^1355042503 is an apocalyptic number.

1355042503 is a deficient number, since it is larger than the sum of its proper divisors (5622825).

1355042503 is an equidigital number, since it uses as much as digits as its factorization.

1355042503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622824.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1355042503 is about 36810.9019585231. The cubic root of 1355042503 is about 1106.5837946705.

The spelling of 1355042503 in words is "one billion, three hundred fifty-five million, forty-two thousand, five hundred three".