99365551 has 2 divisors, whose sum is σ = 99365552. Its totient is φ = 99365550.

The previous prime is 99365537. The next prime is 99365569. The reversal of 99365551 is 15556399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99365551 - 2¹⁷ = 99234479 is a prime.

It is equal to p_5726968 and since 99365551 and 5726968 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 = 99365498 and 99365507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99365531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49682775 + 49682776.

It is an arithmetic number, because the mean of its divisors is an integer number (49682776).

Almost surely, 2^99365551 is an apocalyptic number.

99365551 is a deficient number, since it is larger than the sum of its proper divisors (1).

99365551 is an equidigital number, since it uses as much as digits as its factorization.

99365551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182250, while the sum is 43.

The square root of 99365551 is about 9968.2270740589. The cubic root of 99365551 is about 463.1751829284.

The spelling of 99365551 in words is "ninety-nine million, three hundred sixty-five thousand, five hundred fifty-one".