80550120 has 256 divisors, whose sum is σ = 299520000. Its totient is φ = 17273088.

The previous prime is 80550091. The next prime is 80550181. The reversal of 80550120 is 2105508.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 781989 + ... + 782091.

It is an arithmetic number, because the mean of its divisors is an integer number (1170000).

Almost surely, 2^80550120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80550120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149760000).

80550120 is an abundant number, since it is smaller than the sum of its proper divisors (218969880).

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

80550120 is a wasteful number, since it uses less digits than its factorization.

80550120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 80550120 is about 8974.9718662512. The cubic root of 80550120 is about 431.8723474000.

Adding to 80550120 its reverse (2105508), we get a palindrome (82655628).

The spelling of 80550120 in words is "eighty million, five hundred fifty thousand, one hundred twenty".