155843855 has 16 divisors (see below), whose sum is σ = 188864544. Its totient is φ = 123448320.

The previous prime is 155843827. The next prime is 155843861. The reversal of 155843855 is 558348551.

It is not a de Polignac number, because 155843855 - 2¹⁰ = 155842831 is a prime.

It is a super-2 number, since 2×155843855² = 48574614282522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340787 + ... + 341243.

It is an arithmetic number, because the mean of its divisors is an integer number (11804034).

Almost surely, 2^155843855 is an apocalyptic number.

155843855 is a deficient number, since it is larger than the sum of its proper divisors (33020689).

155843855 is a wasteful number, since it uses less digits than its factorization.

155843855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 480000, while the sum is 44.

The square root of 155843855 is about 12483.7436292164. The cubic root of 155843855 is about 538.1415940427.

The spelling of 155843855 in words is "one hundred fifty-five million, eight hundred forty-three thousand, eight hundred fifty-five".