155432000 has 56 divisors (see below), whose sum is σ = 384947160. Its totient is φ = 62169600.

The previous prime is 155431979. The next prime is 155432009. The reversal of 155432000 is 234551.

It can be written as a sum of positive squares in 4 ways, for example, as 45265984 + 110166016 = 6728^2 + 10496^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (155432009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715 + ... + 17714.

Almost surely, 2^155432000 is an apocalyptic number.

155432000 is a gapful number since it is divisible by the number (10) 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 155432000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192473580).

155432000 is an abundant number, since it is smaller than the sum of its proper divisors (229515160).

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

155432000 is an equidigital number, since it uses as much as digits as its factorization.

155432000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19456 (or 19436 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 155432000 is about 12467.2370635999. The cubic root of 155432000 is about 537.6671194779.

Adding to 155432000 its reverse (234551), we get a palindrome (155666551).

The spelling of 155432000 in words is "one hundred fifty-five million, four hundred thirty-two thousand".