162161550 has 72 divisors (see below), whose sum is σ = 438402744. Its totient is φ = 42972480.

The previous prime is 162161443. The next prime is 162161551. The reversal of 162161550 is 55161261.

It is a happy number.

162161550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162161551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76809 + ... + 78891.

It is an arithmetic number, because the mean of its divisors is an integer number (6088927).

Almost surely, 2^162161550 is an apocalyptic number.

162161550 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 162161550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219201372).

162161550 is an abundant number, since it is smaller than the sum of its proper divisors (276241194).

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

162161550 is a wasteful number, since it uses less digits than its factorization.

162161550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 162161550 is about 12734.2667633437. The cubic root of 162161550 is about 545.3173249519.

It can be divided in two parts, 16216 and 1550, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 162161550 in words is "one hundred sixty-two million, one hundred sixty-one thousand, five hundred fifty".