155557248 has 128 divisors (see below), whose sum is σ = 515255040. Its totient is φ = 40396800.

The previous prime is 155557243. The next prime is 155557249. The reversal of 155557248 is 842755551.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155557243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26938 + ... + 32198.

It is an arithmetic number, because the mean of its divisors is an integer number (4025430).

Almost surely, 2^155557248 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 155557248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257627520).

155557248 is an abundant number, since it is smaller than the sum of its proper divisors (359697792).

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

155557248 is a wasteful number, since it uses less digits than its factorization.

155557248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296 (or 5284 counting only the distinct ones).

The product of its digits is 280000, while the sum is 42.

The square root of 155557248 is about 12472.2591377825. The cubic root of 155557248 is about 537.8114991237.

The spelling of 155557248 in words is "one hundred fifty-five million, five hundred fifty-seven thousand, two hundred forty-eight".