1201530455 has 16 divisors (see below), whose sum is σ = 1520058720. Its totient is φ = 909232128.

The previous prime is 1201530389. The next prime is 1201530479. The reversal of 1201530455 is 5540351021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201530455 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54539 + ... + 73331.

It is an arithmetic number, because the mean of its divisors is an integer number (95003670).

Almost surely, 2^1201530455 is an apocalyptic number.

1201530455 is a deficient number, since it is larger than the sum of its proper divisors (318528265).

1201530455 is a wasteful number, since it uses less digits than its factorization.

1201530455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19490.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1201530455 is about 34663.0993276712. The cubic root of 1201530455 is about 1063.1101414618.

Adding to 1201530455 its reverse (5540351021), we get a palindrome (6741881476).

The spelling of 1201530455 in words is "one billion, two hundred one million, five hundred thirty thousand, four hundred fifty-five".