51250555 has 8 divisors (see below), whose sum is σ = 64174752. Its totient is φ = 39217728.

The previous prime is 51250541. The next prime is 51250567. The reversal of 51250555 is 55505215.

It is a happy number.

51250555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51250555 - 2¹¹ = 51248507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 222714 + ... + 222943.

It is an arithmetic number, because the mean of its divisors is an integer number (8021844).

Almost surely, 2^51250555 is an apocalyptic number.

51250555 is a deficient number, since it is larger than the sum of its proper divisors (12924197).

51250555 is a wasteful number, since it uses less digits than its factorization.

51250555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445685.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 51250555 is about 7158.9492944146. The cubic root of 51250555 is about 371.4492829040.

The spelling of 51250555 in words is "fifty-one million, two hundred fifty thousand, five hundred fifty-five".