51424425 has 36 divisors (see below), whose sum is σ = 99197644. Its totient is φ = 25315200.

The previous prime is 51424421. The next prime is 51424427. The reversal of 51424425 is 52442415.

It can be written as a sum of positive squares in 6 ways, for example, as 10361961 + 41062464 = 3219^2 + 6408^2 .

It is not a de Polignac number, because 51424425 - 2² = 51424421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51424421) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5866 + ... + 11715.

Almost surely, 2^51424425 is an apocalyptic number.

It is an amenable number.

51424425 is a deficient number, since it is larger than the sum of its proper divisors (47773219).

51424425 is a wasteful number, since it uses less digits than its factorization.

51424425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17610 (or 17602 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 51424425 is about 7171.0825542592. The cubic root of 51424425 is about 371.8688620318.

The spelling of 51424425 in words is "fifty-one million, four hundred twenty-four thousand, four hundred twenty-five".