51255655 has 8 divisors (see below), whose sum is σ = 67098384. Its totient is φ = 37276800.

The previous prime is 51255653. The next prime is 51255683. The reversal of 51255655 is 55655215.

51255655 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 51255655 - 2¹ = 51255653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51255655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255653) 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, 465906 + ... + 466015.

It is an arithmetic number, because the mean of its divisors is an integer number (8387298).

Almost surely, 2^51255655 is an apocalyptic number.

51255655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51255655 is a deficient number, since it is larger than the sum of its proper divisors (15842729).

51255655 is a wasteful number, since it uses less digits than its factorization.

51255655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931937.

The product of its digits is 37500, while the sum is 34.

The square root of 51255655 is about 7159.3054830759. The cubic root of 51255655 is about 371.4616036064.

The spelling of 51255655 in words is "fifty-one million, two hundred fifty-five thousand, six hundred fifty-five".