99955651 has 2 divisors, whose sum is σ = 99955652. Its totient is φ = 99955650.

The previous prime is 99955649. The next prime is 99955673. The reversal of 99955651 is 15655999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99955651 - 2¹ = 99955649 is a prime.

It is a super-2 number, since 2×99955651² = 19982264333667602, which contains 22 as substring.

Together with 99955649, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 99955595 and 99955604.

It is not a weakly prime, because it can be changed into another prime (99955601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49977825 + 49977826.

It is an arithmetic number, because the mean of its divisors is an integer number (49977826).

Almost surely, 2^99955651 is an apocalyptic number.

99955651 is a deficient number, since it is larger than the sum of its proper divisors (1).

99955651 is an equidigital number, since it uses as much as digits as its factorization.

99955651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 546750, while the sum is 49.

The square root of 99955651 is about 9997.7823040912. The cubic root of 99955651 is about 464.0902566075.

The spelling of 99955651 in words is "ninety-nine million, nine hundred fifty-five thousand, six hundred fifty-one".