51900349 has 2 divisors, whose sum is σ = 51900350. Its totient is φ = 51900348.

The previous prime is 51900347. The next prime is 51900367. The reversal of 51900349 is 94300915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 319225 = 7182^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 51900349 - 2¹ = 51900347 is a prime.

Together with 51900347, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51900349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51900347) 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, 25950174 + 25950175.

It is an arithmetic number, because the mean of its divisors is an integer number (25950175).

Almost surely, 2^51900349 is an apocalyptic number.

It is an amenable number.

51900349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900349 is an equidigital number, since it uses as much as digits as its factorization.

51900349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51900349 is about 7204.1896837882. The cubic root of 51900349 is about 373.0125347080.

The spelling of 51900349 in words is "fifty-one million, nine hundred thousand, three hundred forty-nine".