1455533121 has 48 divisors (see below), whose sum is σ = 2300006016. Its totient is φ = 802013184.

The previous prime is 1455533077. The next prime is 1455533143. The reversal of 1455533121 is 1213355541.

It is not a de Polignac number, because 1455533121 - 2¹³ = 1455524929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1455533921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5663425 + ... + 5663681.

It is an arithmetic number, because the mean of its divisors is an integer number (47916792).

Almost surely, 2^1455533121 is an apocalyptic number.

It is an amenable number.

1455533121 is a deficient number, since it is larger than the sum of its proper divisors (844472895).

1455533121 is a wasteful number, since it uses less digits than its factorization.

1455533121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 501 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1455533121 is about 38151.4497889661. The cubic root of 1455533121 is about 1133.2890627363.

Adding to 1455533121 its reverse (1213355541), we get a palindrome (2668888662).

The spelling of 1455533121 in words is "one billion, four hundred fifty-five million, five hundred thirty-three thousand, one hundred twenty-one".