162155520 has 440 divisors, whose sum is σ = 642004704. Its totient is φ = 38928384.

The previous prime is 162155509. The next prime is 162155527. The reversal of 162155520 is 25551261.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (162155527) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7050229 + ... + 7050251.

Almost surely, 2^162155520 is an apocalyptic number.

162155520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321002352).

162155520 is an abundant number, since it is smaller than the sum of its proper divisors (479849184).

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

162155520 is a wasteful number, since it uses less digits than its factorization.

162155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 162155520 is about 12734.0299983941. The cubic root of 162155520 is about 545.3105656344.

The spelling of 162155520 in words is "one hundred sixty-two million, one hundred fifty-five thousand, five hundred twenty".