86555240 has 16 divisors (see below), whose sum is σ = 194749380. Its totient is φ = 34622080.

The previous prime is 86555239. The next prime is 86555243. The reversal of 86555240 is 4255568.

It can be written as a sum of positive squares in 2 ways, for example, as 83576164 + 2979076 = 9142^2 + 1726^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86555240.

It is not an unprimeable number, because it can be changed into a prime (86555243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081901 + ... + 1081980.

Almost surely, 2^86555240 is an apocalyptic number.

It is an amenable number.

86555240 is an abundant number, since it is smaller than the sum of its proper divisors (108194140).

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

86555240 is a wasteful number, since it uses less digits than its factorization.

86555240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163892 (or 2163888 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 86555240 is about 9303.5068656932. The cubic root of 86555240 is about 442.3483941256.

The spelling of 86555240 in words is "eighty-six million, five hundred fifty-five thousand, two hundred forty".