155200068 has 18 divisors (see below), whose sum is σ = 392311374. Its totient is φ = 51733344.

The previous prime is 155200057. The next prime is 155200093. The reversal of 155200068 is 860002551.

It can be written as a sum of positive squares in only one way, i.e., 118330884 + 36869184 = 10878^2 + 6072^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×155200068² = 48174122214409248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2155521 + ... + 2155592.

Almost surely, 2^155200068 is an apocalyptic number.

155200068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155200068 is an abundant number, since it is smaller than the sum of its proper divisors (237111306).

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

155200068 is a wasteful number, since it uses less digits than its factorization.

155200068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311123 (or 4311118 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 155200068 is about 12457.9319311032. The cubic root of 155200068 is about 537.3995549100.

The spelling of 155200068 in words is "one hundred fifty-five million, two hundred thousand, sixty-eight".