155414550 has 96 divisors (see below), whose sum is σ = 398465568. Its totient is φ = 40069120.

The previous prime is 155414533. The next prime is 155414557. The reversal of 155414550 is 55414551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155414557) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 898264 + ... + 898436.

It is an arithmetic number, because the mean of its divisors is an integer number (4150683).

Almost surely, 2^155414550 is an apocalyptic number.

155414550 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 155414550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199232784).

155414550 is an abundant number, since it is smaller than the sum of its proper divisors (243051018).

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

155414550 is a wasteful number, since it uses less digits than its factorization.

155414550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 155414550 is about 12466.5372096665. The cubic root of 155414550 is about 537.6469978333.

Subtracting from 155414550 its reverse (55414551), we obtain a palindrome (99999999).

The spelling of 155414550 in words is "one hundred fifty-five million, four hundred fourteen thousand, five hundred fifty".