155289199 has 12 divisors (see below), whose sum is σ = 173583552. Its totient is φ = 138715200.

The previous prime is 155289193. The next prime is 155289221. The reversal of 155289199 is 991982551.

It is not a de Polignac number, because 155289199 - 2⁹ = 155288687 is a prime.

It is a super-2 number, since 2×155289199² = 48229470652123202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155289193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9582 + ... + 20059.

It is an arithmetic number, because the mean of its divisors is an integer number (14465296).

Almost surely, 2^155289199 is an apocalyptic number.

155289199 is a deficient number, since it is larger than the sum of its proper divisors (18294353).

155289199 is a wasteful number, since it uses less digits than its factorization.

155289199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29698 (or 29685 counting only the distinct ones).

The product of its digits is 291600, while the sum is 49.

The square root of 155289199 is about 12461.5086967831. The cubic root of 155289199 is about 537.5024109501.

The spelling of 155289199 in words is "one hundred fifty-five million, two hundred eighty-nine thousand, one hundred ninety-nine".