155854099 has 2 divisors, whose sum is σ = 155854100. Its totient is φ = 155854098.

The previous prime is 155854067. The next prime is 155854103. The reversal of 155854099 is 990458551.

It is a strong prime.

It is an emirp because it is prime and its reverse (990458551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155854099 - 2⁵ = 155854067 is a prime.

It is not a weakly prime, because it can be changed into another prime (155854199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77927049 + 77927050.

It is an arithmetic number, because the mean of its divisors is an integer number (77927050).

Almost surely, 2^155854099 is an apocalyptic number.

155854099 is a deficient number, since it is larger than the sum of its proper divisors (1).

155854099 is an equidigital number, since it uses as much as digits as its factorization.

155854099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 155854099 is about 12484.1539160650. The cubic root of 155854099 is about 538.1533849080.

The spelling of 155854099 in words is "one hundred fifty-five million, eight hundred fifty-four thousand, ninety-nine".