155115847 has 4 divisors (see below), whose sum is σ = 160119616. Its totient is φ = 150112080.

The previous prime is 155115811. The next prime is 155115869. The reversal of 155115847 is 748511551.

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

It is a cyclic number.

It is not a de Polignac number, because 155115847 - 2¹¹ = 155113799 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 (155115347) 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, 2501838 + ... + 2501899.

It is an arithmetic number, because the mean of its divisors is an integer number (40029904).

Almost surely, 2^155115847 is an apocalyptic number.

155115847 is a deficient number, since it is larger than the sum of its proper divisors (5003769).

155115847 is an equidigital number, since it uses as much as digits as its factorization.

155115847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003768.

The product of its digits is 28000, while the sum is 37.

The square root of 155115847 is about 12454.5512564685. The cubic root of 155115847 is about 537.3023287555.

The spelling of 155115847 in words is "one hundred fifty-five million, one hundred fifteen thousand, eight hundred forty-seven".