51315055 has 8 divisors (see below), whose sum is σ = 67176144. Its totient is φ = 37320000.

The previous prime is 51315053. The next prime is 51315083. The reversal of 51315055 is 55051315.

51315055 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 not a de Polignac number, because 51315055 - 2¹ = 51315053 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 (51315053) 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 7 ways as a sum of consecutive naturals, for example, 466446 + ... + 466555.

It is an arithmetic number, because the mean of its divisors is an integer number (8397018).

Almost surely, 2^51315055 is an apocalyptic number.

51315055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51315055 is a deficient number, since it is larger than the sum of its proper divisors (15861089).

51315055 is a wasteful number, since it uses less digits than its factorization.

51315055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933017.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 51315055 is about 7163.4527289569. The cubic root of 51315055 is about 371.6050433961.

The spelling of 51315055 in words is "fifty-one million, three hundred fifteen thousand, fifty-five".