45532231421 has 2 divisors, whose sum is σ = 45532231422. Its totient is φ = 45532231420.

The previous prime is 45532231379. The next prime is 45532231439. The reversal of 45532231421 is 12413223554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33483876196 + 12048355225 = 182986^2 + 109765^2 .

It is a cyclic number.

It is not a de Polignac number, because 45532231421 - 2¹⁴ = 45532215037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45532231021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22766115710 + 22766115711.

It is an arithmetic number, because the mean of its divisors is an integer number (22766115711).

Almost surely, 2^45532231421 is an apocalyptic number.

It is an amenable number.

45532231421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45532231421 is an equidigital number, since it uses as much as digits as its factorization.

45532231421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 32.

Adding to 45532231421 its reverse (12413223554), we get a palindrome (57945454975).

The spelling of 45532231421 in words is "forty-five billion, five hundred thirty-two million, two hundred thirty-one thousand, four hundred twenty-one".