155365856 has 24 divisors (see below), whose sum is σ = 323870400. Its totient is φ = 73113088.

The previous prime is 155365853. The next prime is 155365901. The reversal of 155365856 is 658563551.

It is a super-2 number, since 2×155365856² = 48277098421225472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155365853) 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, 142256 + ... + 143343.

It is an arithmetic number, because the mean of its divisors is an integer number (13494600).

Almost surely, 2^155365856 is an apocalyptic number.

155365856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155365856 is an abundant number, since it is smaller than the sum of its proper divisors (168504544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155365856 is a wasteful number, since it uses less digits than its factorization.

155365856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285626 (or 285618 counting only the distinct ones).

The product of its digits is 540000, while the sum is 44.

The square root of 155365856 is about 12464.5840684718. The cubic root of 155365856 is about 537.5908406768.

The spelling of 155365856 in words is "one hundred fifty-five million, three hundred sixty-five thousand, eight hundred fifty-six".