155130450 has 48 divisors (see below), whose sum is σ = 386731200. Its totient is φ = 41152320.

The previous prime is 155130449. The next prime is 155130461. The reversal of 155130450 is 54031551.

155130450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155130450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27252 + ... + 32448.

It is an arithmetic number, because the mean of its divisors is an integer number (8056900).

Almost surely, 2^155130450 is an apocalyptic number.

155130450 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 155130450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193365600).

155130450 is an abundant number, since it is smaller than the sum of its proper divisors (231600750).

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

155130450 is a wasteful number, since it uses less digits than its factorization.

155130450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411 (or 5406 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 155130450 is about 12455.1374942230. The cubic root of 155130450 is about 537.3191892286.

The spelling of 155130450 in words is "one hundred fifty-five million, one hundred thirty thousand, four hundred fifty".