155121148 has 96 divisors (see below), whose sum is σ = 352235520. Its totient is φ = 58129920.

The previous prime is 155121143. The next prime is 155121151. The reversal of 155121148 is 841121551.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155121143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665640 + ... + 665872.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^155121148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155121148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176117760).

155121148 is an abundant number, since it is smaller than the sum of its proper divisors (197114372).

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

155121148 is a wasteful number, since it uses less digits than its factorization.

155121148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its digits is 1600, while the sum is 28.

The square root of 155121148 is about 12454.7640684198. The cubic root of 155121148 is about 537.3084493577.

Adding to 155121148 its reverse (841121551), we get a palindrome (996242699).

The spelling of 155121148 in words is "one hundred fifty-five million, one hundred twenty-one thousand, one hundred forty-eight".