155553450 has 96 divisors (see below), whose sum is σ = 418431552. Its totient is φ = 38016000.

The previous prime is 155553413. The next prime is 155553457. The reversal of 155553450 is 54355551.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155553457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469785 + ... + 470115.

It is an arithmetic number, because the mean of its divisors is an integer number (4358662).

Almost surely, 2^155553450 is an apocalyptic number.

155553450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155553450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209215776).

155553450 is an abundant number, since it is smaller than the sum of its proper divisors (262878102).

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

155553450 is a wasteful number, since it uses less digits than its factorization.

155553450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 155553450 is about 12472.1068789519. The cubic root of 155553450 is about 537.8071221184.

The spelling of 155553450 in words is "one hundred fifty-five million, five hundred fifty-three thousand, four hundred fifty".