51655101 has 4 divisors (see below), whose sum is σ = 68873472. Its totient is φ = 34436732.

The previous prime is 51655081. The next prime is 51655111. The reversal of 51655101 is 10155615.

51655101 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51655101 - 2¹¹ = 51653053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655111) 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, 8609181 + ... + 8609186.

It is an arithmetic number, because the mean of its divisors is an integer number (17218368).

Almost surely, 2^51655101 is an apocalyptic number.

It is an amenable number.

51655101 is a deficient number, since it is larger than the sum of its proper divisors (17218371).

51655101 is a wasteful number, since it uses less digits than its factorization.

51655101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17218370.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51655101 is about 7187.1483218311. The cubic root of 51655101 is about 372.4240669210.

The spelling of 51655101 in words is "fifty-one million, six hundred fifty-five thousand, one hundred one".