155073199 has 4 divisors (see below), whose sum is σ = 161815536. Its totient is φ = 148330864.

The previous prime is 155073197. The next prime is 155073203. The reversal of 155073199 is 991370551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155073199 - 2¹ = 155073197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155073197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371134 + ... + 3371179.

It is an arithmetic number, because the mean of its divisors is an integer number (40453884).

Almost surely, 2^155073199 is an apocalyptic number.

155073199 is a deficient number, since it is larger than the sum of its proper divisors (6742337).

155073199 is an equidigital number, since it uses as much as digits as its factorization.

155073199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6742336.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 155073199 is about 12452.8389935789. The cubic root of 155073199 is about 537.2530817559.

The spelling of 155073199 in words is "one hundred fifty-five million, seventy-three thousand, one hundred ninety-nine".