51225221445 has 32 divisors (see below), whose sum is σ = 83982286080. Its totient is φ = 26646504960.

The previous prime is 51225221293. The next prime is 51225221513. The reversal of 51225221445 is 54412252215.

It is not a de Polignac number, because 51225221445 - 2¹⁰ = 51225220421 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2818096 + ... + 2836214.

It is an arithmetic number, because the mean of its divisors is an integer number (2624446440).

Almost surely, 2^51225221445 is an apocalyptic number.

It is an amenable number.

51225221445 is a deficient number, since it is larger than the sum of its proper divisors (32757064635).

51225221445 is a wasteful number, since it uses less digits than its factorization.

51225221445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22765.

The product of its digits is 32000, while the sum is 33.

The spelling of 51225221445 in words is "fifty-one billion, two hundred twenty-five million, two hundred twenty-one thousand, four hundred forty-five".