51425002 has 4 divisors (see below), whose sum is σ = 77137506. Its totient is φ = 25712500.

The previous prime is 51424993. The next prime is 51425009. The reversal of 51425002 is 20052415.

51425002 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 only one way, i.e., 34210801 + 17214201 = 5849^2 + 4149^2 .

It is not an unprimeable number, because it can be changed into a prime (51425009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12856249 + ... + 12856252.

Almost surely, 2^51425002 is an apocalyptic number.

51425002 is a deficient number, since it is larger than the sum of its proper divisors (25712504).

51425002 is a wasteful number, since it uses less digits than its factorization.

51425002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25712503.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51425002 is about 7171.1227851711. The cubic root of 51425002 is about 371.8702528594.

Adding to 51425002 its reverse (20052415), we get a palindrome (71477417).

The spelling of 51425002 in words is "fifty-one million, four hundred twenty-five thousand, two".