155345099 has 16 divisors (see below), whose sum is σ = 202442688. Its totient is φ = 115679232.

The previous prime is 155345093. The next prime is 155345117. The reversal of 155345099 is 990543551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155345099 - 2¹² = 155341003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155345093) 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 in 15 ways as a sum of consecutive naturals, for example, 48662 + ... + 51755.

It is an arithmetic number, because the mean of its divisors is an integer number (12652668).

Almost surely, 2^155345099 is an apocalyptic number.

155345099 is a deficient number, since it is larger than the sum of its proper divisors (47097589).

155345099 is a wasteful number, since it uses less digits than its factorization.

155345099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100454.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 155345099 is about 12463.7514015645. The cubic root of 155345099 is about 537.5668987582.

The spelling of 155345099 in words is "one hundred fifty-five million, three hundred forty-five thousand, ninety-nine".