155009087 has 4 divisors (see below), whose sum is σ = 163167480. Its totient is φ = 146850696.

The previous prime is 155009059. The next prime is 155009119. The reversal of 155009087 is 780900551.

155009087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780900551 = 19 ⋅41100029.

It is not a de Polignac number, because 155009087 - 2²⁶ = 87900223 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 (155009027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079168 + ... + 4079205.

It is an arithmetic number, because the mean of its divisors is an integer number (40791870).

Almost surely, 2^155009087 is an apocalyptic number.

155009087 is a deficient number, since it is larger than the sum of its proper divisors (8158393).

155009087 is an equidigital number, since it uses as much as digits as its factorization.

155009087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158392.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 155009087 is about 12450.2645353422. The cubic root of 155009087 is about 537.1790326022.

The spelling of 155009087 in words is "one hundred fifty-five million, nine thousand, eighty-seven".