145553314021 has 4 divisors (see below), whose sum is σ = 146994436044. Its totient is φ = 144112192000.

The previous prime is 145553314019. The next prime is 145553314031. The reversal of 145553314021 is 120413355541.

145553314021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122566509025 + 22986804996 = 350095^2 + 151614^2 .

It is a cyclic number.

It is not a de Polignac number, because 145553314021 - 2¹ = 145553314019 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 (145553314001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 720560860 + ... + 720561061.

It is an arithmetic number, because the mean of its divisors is an integer number (36748609011).

Almost surely, 2^145553314021 is an apocalyptic number.

It is an amenable number.

145553314021 is a deficient number, since it is larger than the sum of its proper divisors (1441122023).

145553314021 is a wasteful number, since it uses less digits than its factorization.

145553314021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441122022.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 145553314021 its reverse (120413355541), we get a palindrome (265966669562).

The spelling of 145553314021 in words is "one hundred forty-five billion, five hundred fifty-three million, three hundred fourteen thousand, twenty-one".