45423204153221 has 4 divisors (see below), whose sum is σ = 45425087941452. Its totient is φ = 45421320364992.

The previous prime is 45423204153179. The next prime is 45423204153253. The reversal of 45423204153221 is 12235140232454.

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 19259467650721 + 26163736502500 = 4388561^2 + 5115050^2 .

It is a cyclic number.

It is not a de Polignac number, because 45423204153221 - 2¹⁰ = 45423204152197 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 (45423204153421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941857946 + ... + 941906171.

It is an arithmetic number, because the mean of its divisors is an integer number (11356271985363).

Almost surely, 2^{45423204153221} is an apocalyptic number.

It is an amenable number.

45423204153221 is a deficient number, since it is larger than the sum of its proper divisors (1883788231).

45423204153221 is a wasteful number, since it uses less digits than its factorization.

45423204153221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883788230.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 45423204153221 its reverse (12235140232454), we get a palindrome (57658344385675).

The spelling of 45423204153221 in words is "forty-five trillion, four hundred twenty-three billion, two hundred four million, one hundred fifty-three thousand, two hundred twenty-one".