155578632 has 64 divisors (see below), whose sum is σ = 425597760. Its totient is φ = 47001600.

The previous prime is 155578607. The next prime is 155578637. The reversal of 155578632 is 236875551.

It is not an unprimeable number, because it can be changed into a prime (155578637) 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, 113632 + ... + 114992.

It is an arithmetic number, because the mean of its divisors is an integer number (6649965).

Almost surely, 2^155578632 is an apocalyptic number.

155578632 is a gapful number since it is divisible by the number (12) 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 155578632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212798880).

155578632 is an abundant number, since it is smaller than the sum of its proper divisors (270019128).

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

155578632 is a wasteful number, since it uses less digits than its factorization.

155578632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1810 counting only the distinct ones).

The product of its digits is 252000, while the sum is 42.

The square root of 155578632 is about 12473.1163708193. The cubic root of 155578632 is about 537.8361417860.

The spelling of 155578632 in words is "one hundred fifty-five million, five hundred seventy-eight thousand, six hundred thirty-two".