51030855 has 48 divisors (see below), whose sum is σ = 95999904. Its totient is φ = 24975360.

The previous prime is 51030851. The next prime is 51030877. The reversal of 51030855 is 55803015.

51030855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51030855 - 2² = 51030851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030851) 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 47 ways as a sum of consecutive naturals, for example, 30552 + ... + 32178.

It is an arithmetic number, because the mean of its divisors is an integer number (1999998).

Almost surely, 2^51030855 is an apocalyptic number.

51030855 is a deficient number, since it is larger than the sum of its proper divisors (44969049).

51030855 is a wasteful number, since it uses less digits than its factorization.

51030855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696 (or 1693 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51030855 is about 7143.5883839986. The cubic root of 51030855 is about 370.9177485167.

The spelling of 51030855 in words is "fifty-one million, thirty thousand, eight hundred fifty-five".