99954551 has 2 divisors, whose sum is σ = 99954552.
Its totient is φ = 99954550.
The previous prime is 99954541. The next prime is 99954557. The reversal of 99954551 is 15545999.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 99954551 - 26 = 99954487 is a prime.
It is a super-2 number, since 2×999545512 = 19981824531223202, which contains 22 as substring.
It is a Chen prime.
It is equal to p5758967 and since 99954551 and 5758967 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 = 99954496 and 99954505.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (99954557) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49977275 + 49977276.
It is an arithmetic number, because the mean of its divisors is an integer number (49977276).
Almost surely, 299954551 is an apocalyptic number.
99954551 is a deficient number, since it is larger than the sum of its proper divisors (1).
99954551 is an equidigital number, since it uses as much as digits as its factorization.
99954551 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 364500, while the sum is 47.
The square root of 99954551 is about 9997.7272917399.
The cubic root of 99954551 is about 464.0885541819.
It can be divided in two parts, 99 and 954551, that multiplied together give a palindrome (94500549).
The spelling of 99954551 in words is "ninety-nine million, nine hundred fifty-four thousand, five hundred fifty-one".