155430450 has 288 divisors, whose sum is σ = 522288000. Its totient is φ = 33022080.

The previous prime is 155430449. The next prime is 155430463. The reversal of 155430450 is 54034551.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 2932624 + ... + 2932676.

It is an arithmetic number, because the mean of its divisors is an integer number (1813500).

Almost surely, 2^155430450 is an apocalyptic number.

155430450 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 155430450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261144000).

155430450 is an abundant number, since it is smaller than the sum of its proper divisors (366857550).

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

155430450 is a wasteful number, since it uses less digits than its factorization.

155430450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 89 counting only the distinct ones).

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

The square root of 155430450 is about 12467.1749005137. The cubic root of 155430450 is about 537.6653322294.

The spelling of 155430450 in words is "one hundred fifty-five million, four hundred thirty thousand, four hundred fifty".