51955231 has 2 divisors, whose sum is σ = 51955232. Its totient is φ = 51955230.

The previous prime is 51955199. The next prime is 51955283. The reversal of 51955231 is 13255915.

51955231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51955231 - 2⁵ = 51955199 is a prime.

It is a super-2 number, since 2×51955231² = 5398692056526722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 51955193 and 51955202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51955531) 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 as a sum of consecutive naturals, namely, 25977615 + 25977616.

It is an arithmetic number, because the mean of its divisors is an integer number (25977616).

Almost surely, 2^51955231 is an apocalyptic number.

51955231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51955231 is an equidigital number, since it uses as much as digits as its factorization.

51955231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 31.

The square root of 51955231 is about 7207.9977108764. The cubic root of 51955231 is about 373.1439690345.

The spelling of 51955231 in words is "fifty-one million, nine hundred fifty-five thousand, two hundred thirty-one".