86551040 has 40 divisors (see below), whose sum is σ = 207525780. Its totient is φ = 34619392.

The previous prime is 86551033. The next prime is 86551079. The reversal of 86551040 is 4015568.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86415616 + 135424 = 9296^2 + 368^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 86550994 and 86551012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14345 + ... + 19464.

Almost surely, 2^86551040 is an apocalyptic number.

86551040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86551040 is an abundant number, since it is smaller than the sum of its proper divisors (120974740).

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

86551040 is an equidigital number, since it uses as much as digits as its factorization.

86551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33832 (or 33816 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 86551040 is about 9303.2811416188. The cubic root of 86551040 is about 442.3412391831.

The spelling of 86551040 in words is "eighty-six million, five hundred fifty-one thousand, forty".