86545520 has 40 divisors (see below), whose sum is σ = 202125456. Its totient is φ = 34462208.

The previous prime is 86545493. The next prime is 86545523. The reversal of 86545520 is 2554568.

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

It is a super-3 number, since 3×86545520³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86545523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16319 + ... + 20961.

Almost surely, 2^86545520 is an apocalyptic number.

86545520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86545520 is an abundant number, since it is smaller than the sum of its proper divisors (115579936).

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

86545520 is a wasteful number, since it uses less digits than its factorization.

86545520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889 (or 4883 counting only the distinct ones).

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

The square root of 86545520 is about 9302.9844673631. The cubic root of 86545520 is about 442.3318351923.

The spelling of 86545520 in words is "eighty-six million, five hundred forty-five thousand, five hundred twenty".