155355450 has 48 divisors (see below), whose sum is σ = 386775840. Its totient is φ = 41267520.

The previous prime is 155355439. The next prime is 155355479. The reversal of 155355450 is 54553551.

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 23 ways as a sum of consecutive naturals, for example, 39681 + ... + 43419.

It is an arithmetic number, because the mean of its divisors is an integer number (8057830).

Almost surely, 2^155355450 is an apocalyptic number.

155355450 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 155355450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193387920).

155355450 is an abundant number, since it is smaller than the sum of its proper divisors (231420390).

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

155355450 is a wasteful number, since it uses less digits than its factorization.

155355450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031 (or 4026 counting only the distinct ones).

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

The square root of 155355450 is about 12464.1666388090. The cubic root of 155355450 is about 537.5788382645.

The spelling of 155355450 in words is "one hundred fifty-five million, three hundred fifty-five thousand, four hundred fifty".