155537228 has 24 divisors (see below), whose sum is σ = 339354624. Its totient is φ = 60598800.

The previous prime is 155537219. The next prime is 155537243. The reversal of 155537228 is 822735551.

It is a junction number, because it is equal to n+sod(n) for n = 155537191 and 155537200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252188 + ... + 252803.

It is an arithmetic number, because the mean of its divisors is an integer number (14139776).

Almost surely, 2^155537228 is an apocalyptic number.

It is an amenable number.

155537228 is an abundant number, since it is smaller than the sum of its proper divisors (183817396).

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

155537228 is a wasteful number, since it uses less digits than its factorization.

155537228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505013 (or 505011 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

The square root of 155537228 is about 12471.4565308147. The cubic root of 155537228 is about 537.7884262716.

It can be divided in two parts, 1555 and 37228, that added together give a palindrome (38783).

The spelling of 155537228 in words is "one hundred fifty-five million, five hundred thirty-seven thousand, two hundred twenty-eight".