155042211 has 4 divisors (see below), whose sum is σ = 206722952. Its totient is φ = 103361472.

The previous prime is 155042113. The next prime is 155042231. The reversal of 155042211 is 112240551.

155042211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112240551 = 3 ⋅37413517.

It is not a de Polignac number, because 155042211 - 2¹¹ = 155040163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155042231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25840366 + ... + 25840371.

It is an arithmetic number, because the mean of its divisors is an integer number (51680738).

Almost surely, 2^155042211 is an apocalyptic number.

155042211 is a deficient number, since it is larger than the sum of its proper divisors (51680741).

155042211 is an equidigital number, since it uses as much as digits as its factorization.

155042211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51680740.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 155042211 is about 12451.5947171437. The cubic root of 155042211 is about 537.2172932645.

Adding to 155042211 its reverse (112240551), we get a palindrome (267282762).

The spelling of 155042211 in words is "one hundred fifty-five million, forty-two thousand, two hundred eleven".