155133428 has 12 divisors (see below), whose sum is σ = 271734372. Its totient is φ = 77495040.

The previous prime is 155133401. The next prime is 155133439. The reversal of 155133428 is 824331551.

It can be written as a sum of positive squares in 2 ways, for example, as 41113744 + 114019684 = 6412^2 + 10678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155133394 and 155133403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12893 + ... + 21828.

It is an arithmetic number, because the mean of its divisors is an integer number (22644531).

Almost surely, 2^155133428 is an apocalyptic number.

It is an amenable number.

155133428 is a deficient number, since it is larger than the sum of its proper divisors (116600944).

155133428 is a wasteful number, since it uses less digits than its factorization.

155133428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35842 (or 35840 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 155133428 is about 12455.2570427109. The cubic root of 155133428 is about 537.3226274667.

Adding to 155133428 its reverse (824331551), we get a palindrome (979464979).

The spelling of 155133428 in words is "one hundred fifty-five million, one hundred thirty-three thousand, four hundred twenty-eight".