1455521445 has 48 divisors (see below), whose sum is σ = 2932225920. Its totient is φ = 654095232.

The previous prime is 1455521413. The next prime is 1455521447. The reversal of 1455521445 is 5441255541.

1455521445 is a `hidden beast` number, since 145 + 55 + 21 + 445 = 666.

It is not a de Polignac number, because 1455521445 - 2⁵ = 1455521413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455521447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20574 + ... + 57743.

It is an arithmetic number, because the mean of its divisors is an integer number (61088040).

Almost surely, 2^1455521445 is an apocalyptic number.

1455521445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1455521445 is an abundant number, since it is smaller than the sum of its proper divisors (1476704475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1455521445 is a wasteful number, since it uses less digits than its factorization.

1455521445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78394 (or 78391 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 1455521445 is about 38151.2967669514. The cubic root of 1455521445 is about 1133.2860323877.

Adding to 1455521445 its reverse (5441255541), we get a palindrome (6896776986).

The spelling of 1455521445 in words is "one billion, four hundred fifty-five million, five hundred twenty-one thousand, four hundred forty-five".