51045425 has 6 divisors (see below), whose sum is σ = 63296358. Its totient is φ = 40836320.

The previous prime is 51045383. The next prime is 51045497. The reversal of 51045425 is 52454015.

It can be written as a sum of positive squares in 3 ways, for example, as 222784 + 50822641 = 472^2 + 7129^2 .

It is not a de Polignac number, because 51045425 - 2¹⁸ = 50783281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51045394 and 51045403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1020884 + ... + 1020933.

It is an arithmetic number, because the mean of its divisors is an integer number (10549393).

Almost surely, 2^51045425 is an apocalyptic number.

It is an amenable number.

51045425 is a deficient number, since it is larger than the sum of its proper divisors (12250933).

51045425 is a wasteful number, since it uses less digits than its factorization.

51045425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041827 (or 2041822 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 51045425 is about 7144.6081068173. The cubic root of 51045425 is about 370.9530458373.

The spelling of 51045425 in words is "fifty-one million, forty-five thousand, four hundred twenty-five".