155115648 has 96 divisors (see below), whose sum is σ = 462986160. Its totient is φ = 51694848.

The previous prime is 155115637. The next prime is 155115673. The reversal of 155115648 is 846511551.

155115648 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 1 + 5 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×155115648³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28611 + ... + 33597.

Almost surely, 2^155115648 is an apocalyptic number.

155115648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155115648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231493080).

155115648 is an abundant number, since it is smaller than the sum of its proper divisors (307870512).

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

155115648 is an frugal number, since it uses more digits than its factorization.

155115648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016 (or 4992 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 155115648 is about 12454.5432674185. The cubic root of 155115648 is about 537.3020989848.

The spelling of 155115648 in words is "one hundred fifty-five million, one hundred fifteen thousand, six hundred forty-eight".