51425563 has 8 divisors (see below), whose sum is σ = 58833632. Its totient is φ = 44032896.

The previous prime is 51425557. The next prime is 51425579. The reversal of 51425563 is 36552415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51425563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51426563) 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 7 ways as a sum of consecutive naturals, for example, 4531 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (7354204).

Almost surely, 2^51425563 is an apocalyptic number.

51425563 is a deficient number, since it is larger than the sum of its proper divisors (7408069).

51425563 is a wasteful number, since it uses less digits than its factorization.

51425563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701.

The product of its digits is 18000, while the sum is 31.

The square root of 51425563 is about 7171.1619002781. The cubic root of 51425563 is about 371.8716051099.

Adding to 51425563 its reverse (36552415), we get a palindrome (87977978).

The spelling of 51425563 in words is "fifty-one million, four hundred twenty-five thousand, five hundred sixty-three".