87182481 has 8 divisors (see below), whose sum is σ = 118149184. Its totient is φ = 57168720.

The previous prime is 87182479. The next prime is 87182549. The reversal of 87182481 is 18428178.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87182481 - 2¹ = 87182479 is a prime.

It is a super-2 number, since 2×87182481² = 15201569986630722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87182401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238021 + ... + 238386.

It is an arithmetic number, because the mean of its divisors is an integer number (14768648).

Almost surely, 2^87182481 is an apocalyptic number.

It is an amenable number.

87182481 is a deficient number, since it is larger than the sum of its proper divisors (30966703).

87182481 is a wasteful number, since it uses less digits than its factorization.

87182481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476471.

The product of its digits is 28672, while the sum is 39.

The square root of 87182481 is about 9337.1559374362. The cubic root of 87182481 is about 443.4143473533.

The spelling of 87182481 in words is "eighty-seven million, one hundred eighty-two thousand, four hundred eighty-one".