155047899 has 16 divisors (see below), whose sum is σ = 216013824. Its totient is φ = 98736000.

The previous prime is 155047889. The next prime is 155047903. The reversal of 155047899 is 998740551.

It is not a de Polignac number, because 155047899 - 2¹³ = 155039707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155047829) 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 in 15 ways as a sum of consecutive naturals, for example, 81934 + ... + 83804.

It is an arithmetic number, because the mean of its divisors is an integer number (13500864).

Almost surely, 2^155047899 is an apocalyptic number.

155047899 is a deficient number, since it is larger than the sum of its proper divisors (60965925).

155047899 is a wasteful number, since it uses less digits than its factorization.

155047899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 155047899 is about 12451.8231195275. The cubic root of 155047899 is about 537.2238627756.

The spelling of 155047899 in words is "one hundred fifty-five million, forty-seven thousand, eight hundred ninety-nine".