99680051 has 2 divisors, whose sum is σ = 99680052. Its totient is φ = 99680050.

The previous prime is 99680011. The next prime is 99680059. The reversal of 99680051 is 15008699.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99680051 is a prime.

It is a super-2 number, since 2×99680051² = 19872225134725202, which contains 22 as substring.

It is equal to p_5744099 and since 99680051 and 5744099 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 99679987 and 99680014.

It is not a weakly prime, because it can be changed into another prime (99680059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49840025 + 49840026.

It is an arithmetic number, because the mean of its divisors is an integer number (49840026).

Almost surely, 2^99680051 is an apocalyptic number.

99680051 is a deficient number, since it is larger than the sum of its proper divisors (1).

99680051 is an equidigital number, since it uses as much as digits as its factorization.

99680051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 99680051 is about 9983.9897335684. The cubic root of 99680051 is about 463.6633305776.

The spelling of 99680051 in words is "ninety-nine million, six hundred eighty thousand, fifty-one".