51880099 has 2 divisors, whose sum is σ = 51880100. Its totient is φ = 51880098.

The previous prime is 51880097. The next prime is 51880117. The reversal of 51880099 is 99008815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51880099 - 2¹ = 51880097 is a prime.

Together with 51880097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51880091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25940049 + 25940050.

It is an arithmetic number, because the mean of its divisors is an integer number (25940050).

Almost surely, 2^51880099 is an apocalyptic number.

51880099 is a deficient number, since it is larger than the sum of its proper divisors (1).

51880099 is an equidigital number, since it uses as much as digits as its factorization.

51880099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 51880099 is about 7202.7841144935. The cubic root of 51880099 is about 372.9640155325.

The spelling of 51880099 in words is "fifty-one million, eight hundred eighty thousand, ninety-nine".