1355603045 has 4 divisors (see below), whose sum is σ = 1626723660. Its totient is φ = 1084482432.

The previous prime is 1355603021. The next prime is 1355603047. The reversal of 1355603045 is 5403065531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5403065531 = 1511 ⋅3575821.

It can be written as a sum of positive squares in 2 ways, for example, as 476243329 + 879359716 = 21823^2 + 29654^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355603045 - 2⁸ = 1355602789 is a prime.

It is a super-2 number, since 2×1355603045² = 3675319231226544050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355603047) 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, 135560300 + ... + 135560309.

It is an arithmetic number, because the mean of its divisors is an integer number (406680915).

Almost surely, 2^1355603045 is an apocalyptic number.

It is an amenable number.

1355603045 is a deficient number, since it is larger than the sum of its proper divisors (271120615).

1355603045 is an equidigital number, since it uses as much as digits as its factorization.

1355603045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271120614.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 1355603045 is about 36818.5149754848. The cubic root of 1355603045 is about 1106.7363609013.

Adding to 1355603045 its reverse (5403065531), we get a palindrome (6758668576).

The spelling of 1355603045 in words is "one billion, three hundred fifty-five million, six hundred three thousand, forty-five".