155541145 has 8 divisors (see below), whose sum is σ = 186798600. Its totient is φ = 124333440.

The previous prime is 155541131. The next prime is 155541187. The reversal of 155541145 is 541145551.

155541145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5992704 + 149548441 = 2448^2 + 12229^2 .

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

It is not a de Polignac number, because 155541145 - 2⁷ = 155541017 is a prime.

It is a super-2 number, since 2×155541145² = 48386095575822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5170 + ... + 18379.

It is an arithmetic number, because the mean of its divisors is an integer number (23349825).

Almost surely, 2^155541145 is an apocalyptic number.

It is an amenable number.

155541145 is a deficient number, since it is larger than the sum of its proper divisors (31257455).

155541145 is a wasteful number, since it uses less digits than its factorization.

155541145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24875.

The product of its digits is 10000, while the sum is 31.

The square root of 155541145 is about 12471.6135684201. The cubic root of 155541145 is about 537.7929407312.

Adding to 155541145 its reverse (541145551), we get a palindrome (696686696).

The spelling of 155541145 in words is "one hundred fifty-five million, five hundred forty-one thousand, one hundred forty-five".