51425051 has 4 divisors (see below), whose sum is σ = 54450072. Its totient is φ = 48400032.

The previous prime is 51425041. The next prime is 51425071. The reversal of 51425051 is 15052415.

It is a happy number.

51425051 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 is a cyclic number.

It is not a de Polignac number, because 51425051 - 2¹⁰ = 51424027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51425041) 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 in 3 ways as a sum of consecutive naturals, for example, 1512485 + ... + 1512518.

It is an arithmetic number, because the mean of its divisors is an integer number (13612518).

Almost surely, 2^51425051 is an apocalyptic number.

51425051 is a deficient number, since it is larger than the sum of its proper divisors (3025021).

51425051 is a wasteful number, since it uses less digits than its factorization.

51425051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025020.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 51425051 is about 7171.1262016506. The cubic root of 51425051 is about 371.8703709708.

Adding to 51425051 its reverse (15052415), we get a palindrome (66477466).

The spelling of 51425051 in words is "fifty-one million, four hundred twenty-five thousand, fifty-one".