1603455053 has 4 divisors (see below), whose sum is σ = 1604758848. Its totient is φ = 1602151260.

The previous prime is 1603455031. The next prime is 1603455071. The reversal of 1603455053 is 3505543061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3505543061 = 51193 ⋅68477.

It is a cyclic number.

It is not a de Polignac number, because 1603455053 - 2¹⁰ = 1603454029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603455083) 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, 650051 + ... + 652512.

It is an arithmetic number, because the mean of its divisors is an integer number (401189712).

Almost surely, 2^1603455053 is an apocalyptic number.

It is an amenable number.

1603455053 is a deficient number, since it is larger than the sum of its proper divisors (1303795).

1603455053 is a wasteful number, since it uses less digits than its factorization.

1603455053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303794.

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

The square root of 1603455053 is about 40043.1648724224. The cubic root of 1603455053 is about 1170.4483763739.

The spelling of 1603455053 in words is "one billion, six hundred three million, four hundred fifty-five thousand, fifty-three".