51900223 has 2 divisors, whose sum is σ = 51900224. Its totient is φ = 51900222.

The previous prime is 51900221. The next prime is 51900253. The reversal of 51900223 is 32200915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51900223 - 2¹ = 51900221 is a prime.

Together with 51900221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51900194 and 51900203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51900221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25950111 + 25950112.

It is an arithmetic number, because the mean of its divisors is an integer number (25950112).

Almost surely, 2^51900223 is an apocalyptic number.

51900223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900223 is an equidigital number, since it uses as much as digits as its factorization.

51900223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 51900223 is about 7204.1809388715. The cubic root of 51900223 is about 373.0122328500.

The spelling of 51900223 in words is "fifty-one million, nine hundred thousand, two hundred twenty-three".