155224134 has 96 divisors (see below), whose sum is σ = 380259360. Its totient is φ = 46904832.

The previous prime is 155224133. The next prime is 155224141. The reversal of 155224134 is 431422551.

155224134 is a `hidden beast` number, since 1 + 5 + 522 + 4 + 134 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 155224098 and 155224107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155224133) 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, 666082 + ... + 666314.

It is an arithmetic number, because the mean of its divisors is an integer number (3961035).

Almost surely, 2^155224134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155224134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190129680).

155224134 is an abundant number, since it is smaller than the sum of its proper divisors (225035226).

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

155224134 is a wasteful number, since it uses less digits than its factorization.

155224134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 324 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 155224134 is about 12458.8977843146. The cubic root of 155224134 is about 537.4273306480.

Adding to 155224134 its reverse (431422551), we get a palindrome (586646685).

The spelling of 155224134 in words is "one hundred fifty-five million, two hundred twenty-four thousand, one hundred thirty-four".