45450550421 has 2 divisors, whose sum is σ = 45450550422. Its totient is φ = 45450550420.

The previous prime is 45450550381. The next prime is 45450550423. The reversal of 45450550421 is 12405505454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36446628100 + 9003922321 = 190910^2 + 94889^2 .

It is a cyclic number.

It is not a de Polignac number, because 45450550421 - 2¹⁴ = 45450534037 is a prime.

Together with 45450550423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45450550423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22725275210 + 22725275211.

It is an arithmetic number, because the mean of its divisors is an integer number (22725275211).

Almost surely, 2^45450550421 is an apocalyptic number.

It is an amenable number.

45450550421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45450550421 is an equidigital number, since it uses as much as digits as its factorization.

45450550421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 45450550421 in words is "forty-five billion, four hundred fifty million, five hundred fifty thousand, four hundred twenty-one".