51255055 has 4 divisors (see below), whose sum is σ = 61506072. Its totient is φ = 41004040.

The previous prime is 51255053. The next prime is 51255133. The reversal of 51255055 is 55055215.

It is a happy number.

51255055 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 not a de Polignac number, because 51255055 - 2¹ = 51255053 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 (51255053) 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, 5125501 + ... + 5125510.

It is an arithmetic number, because the mean of its divisors is an integer number (15376518).

Almost surely, 2^51255055 is an apocalyptic number.

51255055 is a deficient number, since it is larger than the sum of its proper divisors (10251017).

51255055 is a wasteful number, since it uses less digits than its factorization.

51255055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10251016.

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

The square root of 51255055 is about 7159.2635794473. The cubic root of 51255055 is about 371.4601541544.

The spelling of 51255055 in words is "fifty-one million, two hundred fifty-five thousand, fifty-five".