155116205 has 8 divisors (see below), whose sum is σ = 186865272. Its totient is φ = 123609088.

The previous prime is 155116201. The next prime is 155116207. The reversal of 155116205 is 502611551.

It can be written as a sum of positive squares in 4 ways, for example, as 59428681 + 95687524 = 7709^2 + 9782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155116205 - 2² = 155116201 is a prime.

It is a super-2 number, since 2×155116205² = 48122074107204050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155116201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59072 + ... + 61641.

It is an arithmetic number, because the mean of its divisors is an integer number (23358159).

Almost surely, 2^155116205 is an apocalyptic number.

It is an amenable number.

155116205 is a deficient number, since it is larger than the sum of its proper divisors (31749067).

155116205 is a wasteful number, since it uses less digits than its factorization.

155116205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120975.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 155116205 is about 12454.5656287162. The cubic root of 155116205 is about 537.3027421112.

Adding to 155116205 its reverse (502611551), we get a palindrome (657727756).

The spelling of 155116205 in words is "one hundred fifty-five million, one hundred sixteen thousand, two hundred five".