155345400 has 144 divisors (see below), whose sum is σ = 596278800. Its totient is φ = 35504640.

The previous prime is 155345353. The next prime is 155345401. The reversal of 155345400 is 4543551.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155345401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6436 + ... + 18764.

It is an arithmetic number, because the mean of its divisors is an integer number (4140825).

Almost surely, 2^155345400 is an apocalyptic number.

155345400 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 155345400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298139400).

155345400 is an abundant number, since it is smaller than the sum of its proper divisors (440933400).

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

155345400 is a wasteful number, since it uses less digits than its factorization.

155345400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358 (or 12346 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155345400 is about 12463.7634765748. The cubic root of 155345400 is about 537.5672459583.

Adding to 155345400 its reverse (4543551), we get a palindrome (159888951).

The spelling of 155345400 in words is "one hundred fifty-five million, three hundred forty-five thousand, four hundred".