155434422 has 96 divisors (see below), whose sum is σ = 377524224. Its totient is φ = 42356160.

The previous prime is 155434399. The next prime is 155434427. The reversal of 155434422 is 224434551.

It is a self number, because there is not a number n which added to its sum of digits gives 155434422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155434427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 405643 + ... + 406025.

It is an arithmetic number, because the mean of its divisors is an integer number (3932544).

Almost surely, 2^155434422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155434422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188762112).

155434422 is an abundant number, since it is smaller than the sum of its proper divisors (222089802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155434422 is a wasteful number, since it uses less digits than its factorization.

155434422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 455 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 155434422 is about 12467.3341978147. The cubic root of 155434422 is about 537.6699121739.

Adding to 155434422 its reverse (224434551), we get a palindrome (379868973).

The spelling of 155434422 in words is "one hundred fifty-five million, four hundred thirty-four thousand, four hundred twenty-two".