155315234441 has 4 divisors (see below), whose sum is σ = 155706457092. Its totient is φ = 154924011792.

The previous prime is 155315234407. The next prime is 155315234461. The reversal of 155315234441 is 144432513551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144432513551 = 55697 ⋅2593183.

It can be written as a sum of positive squares in 2 ways, for example, as 64108214416 + 91207020025 = 253196^2 + 302005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155315234441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155315234395 and 155315234404.

It is not an unprimeable number, because it can be changed into a prime (155315234401) 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, 195610730 + ... + 195611523.

It is an arithmetic number, because the mean of its divisors is an integer number (38926614273).

Almost surely, 2^155315234441 is an apocalyptic number.

It is an amenable number.

155315234441 is a deficient number, since it is larger than the sum of its proper divisors (391222651).

155315234441 is an equidigital number, since it uses as much as digits as its factorization.

155315234441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391222650.

The product of its digits is 144000, while the sum is 38.

Adding to 155315234441 its reverse (144432513551), we get a palindrome (299747747992).

The spelling of 155315234441 in words is "one hundred fifty-five billion, three hundred fifteen million, two hundred thirty-four thousand, four hundred forty-one".