51225584945 has 4 divisors (see below), whose sum is σ = 61470701940. Its totient is φ = 40980467952.

The previous prime is 51225584933. The next prime is 51225584947. The reversal of 51225584945 is 54948552215.

51225584945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15833440561 + 35392144384 = 125831^2 + 188128^2 .

It is a cyclic number.

It is not a de Polignac number, because 51225584945 - 2¹⁴ = 51225568561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51225584893 and 51225584902.

It is not an unprimeable number, because it can be changed into a prime (51225584947) 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, 5122558490 + ... + 5122558499.

It is an arithmetic number, because the mean of its divisors is an integer number (15367675485).

Almost surely, 2^51225584945 is an apocalyptic number.

It is an amenable number.

51225584945 is a deficient number, since it is larger than the sum of its proper divisors (10245116995).

51225584945 is a wasteful number, since it uses less digits than its factorization.

51225584945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10245116994.

The product of its digits is 2880000, while the sum is 50.

The spelling of 51225584945 in words is "fifty-one billion, two hundred twenty-five million, five hundred eighty-four thousand, nine hundred forty-five".