51025559 has 4 divisors (see below), whose sum is σ = 54950616. Its totient is φ = 47100504.

The previous prime is 51025537. The next prime is 51025567. The reversal of 51025559 is 95552015.

51025559 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 51025559 - 2¹⁶ = 50960023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025259) 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, 1962509 + ... + 1962534.

It is an arithmetic number, because the mean of its divisors is an integer number (13737654).

Almost surely, 2^51025559 is an apocalyptic number.

51025559 is a deficient number, since it is larger than the sum of its proper divisors (3925057).

51025559 is a wasteful number, since it uses less digits than its factorization.

51025559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925056.

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 51025559 is about 7143.2176923289. The cubic root of 51025559 is about 370.9049167482.

The spelling of 51025559 in words is "fifty-one million, twenty-five thousand, five hundred fifty-nine".