8155149 has 4 divisors (see below), whose sum is σ = 10873536. Its totient is φ = 5436764.

The previous prime is 8155141. The next prime is 8155171. The reversal of 8155149 is 9415518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8155149 - 2³ = 8155141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155141) 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 3 ways as a sum of consecutive naturals, for example, 1359189 + ... + 1359194.

It is an arithmetic number, because the mean of its divisors is an integer number (2718384).

Almost surely, 2^8155149 is an apocalyptic number.

It is an amenable number.

8155149 is a deficient number, since it is larger than the sum of its proper divisors (2718387).

8155149 is a wasteful number, since it uses less digits than its factorization.

8155149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718386.

The product of its digits is 7200, while the sum is 33.

The square root of 8155149 is about 2855.7221503501. The cubic root of 8155149 is about 201.2846391773.

The spelling of 8155149 in words is "eight million, one hundred fifty-five thousand, one hundred forty-nine".