155206141 has 4 divisors (see below), whose sum is σ = 164335932. Its totient is φ = 146076352.

The previous prime is 155206123. The next prime is 155206171. The reversal of 155206141 is 141602551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91126116 + 64080025 = 9546^2 + 8005^2 .

It is a cyclic number.

It is not a de Polignac number, because 155206141 - 2⁵ = 155206109 is a prime.

It is a super-2 number, since 2×155206141² = 48177892408223762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155206171) 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, 4564870 + ... + 4564903.

It is an arithmetic number, because the mean of its divisors is an integer number (41083983).

Almost surely, 2^155206141 is an apocalyptic number.

It is an amenable number.

155206141 is a deficient number, since it is larger than the sum of its proper divisors (9129791).

155206141 is an equidigital number, since it uses as much as digits as its factorization.

155206141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129790.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 155206141 is about 12458.1756690135. The cubic root of 155206141 is about 537.4065643247.

Adding to 155206141 its reverse (141602551), we get a palindrome (296808692).

The spelling of 155206141 in words is "one hundred fifty-five million, two hundred six thousand, one hundred forty-one".