155222441 has 4 divisors (see below), whose sum is σ = 169333584. Its totient is φ = 141111300.

The previous prime is 155222357. The next prime is 155222447. The reversal of 155222441 is 144222551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155222441 - 2²⁶ = 88113577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155222441.

It is not an unprimeable number, because it can be changed into a prime (155222447) 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, 7055555 + ... + 7055576.

It is an arithmetic number, because the mean of its divisors is an integer number (42333396).

Almost surely, 2^155222441 is an apocalyptic number.

155222441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155222441 is a deficient number, since it is larger than the sum of its proper divisors (14111143).

155222441 is a wasteful number, since it uses less digits than its factorization.

155222441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111142.

The product of its digits is 3200, while the sum is 26.

The square root of 155222441 is about 12458.8298407194. The cubic root of 155222441 is about 537.4253767684.

Adding to 155222441 its reverse (144222551), we get a palindrome (299444992).

The spelling of 155222441 in words is "one hundred fifty-five million, two hundred twenty-two thousand, four hundred forty-one".