45522051221 has 4 divisors (see below), whose sum is σ = 46163206944. Its totient is φ = 44880895500.

The previous prime is 45522051203. The next prime is 45522051241. The reversal of 45522051221 is 12215022554.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45522051221 - 2¹⁴ = 45522034837 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 (45522051241) 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, 320577755 + ... + 320577896.

It is an arithmetic number, because the mean of its divisors is an integer number (11540801736).

Almost surely, 2^45522051221 is an apocalyptic number.

It is an amenable number.

45522051221 is a deficient number, since it is larger than the sum of its proper divisors (641155723).

45522051221 is an equidigital number, since it uses as much as digits as its factorization.

45522051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641155722.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 45522051221 its reverse (12215022554), we get a palindrome (57737073775).

The spelling of 45522051221 in words is "forty-five billion, five hundred twenty-two million, fifty-one thousand, two hundred twenty-one".