155000213 has 8 divisors (see below), whose sum is σ = 159036696. Its totient is φ = 150976000.

The previous prime is 155000201. The next prime is 155000227. The reversal of 155000213 is 312000551.

It can be written as a sum of positive squares in 4 ways, for example, as 48972004 + 106028209 = 6998^2 + 10297^2 .

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 155000213 - 2⁶ = 155000149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155000191 and 155000200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155003213) 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, 26045 + ... + 31437.

It is an arithmetic number, because the mean of its divisors is an integer number (19879587).

Almost surely, 2^155000213 is an apocalyptic number.

It is an amenable number.

155000213 is a deficient number, since it is larger than the sum of its proper divisors (4036483).

155000213 is an equidigital number, since it uses as much as digits as its factorization.

155000213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 155000213 is about 12449.9081522716. The cubic root of 155000213 is about 537.1687815522.

Adding to 155000213 its reverse (312000551), we get a palindrome (467000764).

The spelling of 155000213 in words is "one hundred fifty-five million, two hundred thirteen", and thus it is an aban number.