5100049991 has 2 divisors, whose sum is σ = 5100049992. Its totient is φ = 5100049990.

The previous prime is 5100049987. The next prime is 5100050003. The reversal of 5100049991 is 1999400015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5100049991 - 2² = 5100049987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5100049931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550024995 + 2550024996.

It is an arithmetic number, because the mean of its divisors is an integer number (2550024996).

Almost surely, 2^5100049991 is an apocalyptic number.

5100049991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5100049991 is an equidigital number, since it uses as much as digits as its factorization.

5100049991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 5100049991 is about 71414.6342915792. The cubic root of 5100049991 is about 1721.3062448608.

The spelling of 5100049991 in words is "five billion, one hundred million, forty-nine thousand, nine hundred ninety-one".