86521752 has 24 divisors (see below), whose sum is σ = 234329940. Its totient is φ = 28840560.

The previous prime is 86521739. The next prime is 86521753. The reversal of 86521752 is 25712568.

It is a happy number.

86521752 is a `hidden beast` number, since 86 + 521 + 7 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600774 + ... + 600917.

Almost surely, 2^86521752 is an apocalyptic number.

It is an amenable number.

86521752 is an abundant number, since it is smaller than the sum of its proper divisors (147808188).

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

86521752 is a wasteful number, since it uses less digits than its factorization.

86521752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201703 (or 1201696 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 86521752 is about 9301.7069401266. The cubic root of 86521752 is about 442.2913389477.

It can be divided in two parts, 8652 and 1752, that added together give a square (10404 = 102²).

The spelling of 86521752 in words is "eighty-six million, five hundred twenty-one thousand, seven hundred fifty-two".