1455521145 has 96 divisors (see below), whose sum is σ = 2669399040. Its totient is φ = 672468480.

The previous prime is 1455521143. The next prime is 1455521173. The reversal of 1455521145 is 5411255541.

It is a happy number.

1455521145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1455521145 - 2¹ = 1455521143 is a prime.

It is a super-2 number, since 2×1455521145² = 4237083607084222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1455521143) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13353351 + ... + 13353459.

It is an arithmetic number, because the mean of its divisors is an integer number (27806240).

Almost surely, 2^1455521145 is an apocalyptic number.

1455521145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1455521145 is a deficient number, since it is larger than the sum of its proper divisors (1213877895).

1455521145 is a wasteful number, since it uses less digits than its factorization.

1455521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 208 counting only the distinct ones).

The product of its digits is 20000, while the sum is 33.

The square root of 1455521145 is about 38151.2928352369. The cubic root of 1455521145 is about 1133.2859545265.

Adding to 1455521145 its reverse (5411255541), we get a palindrome (6866776686).

The spelling of 1455521145 in words is "one billion, four hundred fifty-five million, five hundred twenty-one thousand, one hundred forty-five".