51890299 has 2 divisors, whose sum is σ = 51890300. Its totient is φ = 51890298.

The previous prime is 51890269. The next prime is 51890351. The reversal of 51890299 is 99209815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51890299 - 2¹⁹ = 51366011 is a prime.

It is not a weakly prime, because it can be changed into another prime (51890269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25945149 + 25945150.

It is an arithmetic number, because the mean of its divisors is an integer number (25945150).

Almost surely, 2^51890299 is an apocalyptic number.

51890299 is a deficient number, since it is larger than the sum of its proper divisors (1).

51890299 is an equidigital number, since it uses as much as digits as its factorization.

51890299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 51890299 is about 7203.4921392336. The cubic root of 51890299 is about 372.9884563987.

The spelling of 51890299 in words is "fifty-one million, eight hundred ninety thousand, two hundred ninety-nine".