155005213 has 8 divisors (see below), whose sum is σ = 171963360. Its totient is φ = 138524880.

The previous prime is 155005187. The next prime is 155005217. The reversal of 155005213 is 312500551.

155005213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 155005213 - 2¹³ = 154997021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155005217) 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, 118770 + ... + 120067.

It is an arithmetic number, because the mean of its divisors is an integer number (21495420).

Almost surely, 2^155005213 is an apocalyptic number.

It is an amenable number.

155005213 is a deficient number, since it is larger than the sum of its proper divisors (16958147).

155005213 is a wasteful number, since it uses less digits than its factorization.

155005213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238907.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 155005213 is about 12450.1089553465. The cubic root of 155005213 is about 537.1745574906.

Adding to 155005213 its reverse (312500551), we get a palindrome (467505764).

The spelling of 155005213 in words is "one hundred fifty-five million, five thousand, two hundred thirteen".