87448561 has 8 divisors (see below), whose sum is σ = 94163040. Its totient is φ = 80908608.

The previous prime is 87448549. The next prime is 87448567. The reversal of 87448561 is 16584478.

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

It is a cyclic number.

It is not a de Polignac number, because 87448561 - 2⁷ = 87448433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87448567) 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, 42591 + ... + 44596.

It is an arithmetic number, because the mean of its divisors is an integer number (11770380).

Almost surely, 2^87448561 is an apocalyptic number.

It is an amenable number.

87448561 is a deficient number, since it is larger than the sum of its proper divisors (6714479).

87448561 is a wasteful number, since it uses less digits than its factorization.

87448561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87263.

The product of its digits is 215040, while the sum is 43.

The square root of 87448561 is about 9351.3935325170. The cubic root of 87448561 is about 443.8649878297.

The spelling of 87448561 in words is "eighty-seven million, four hundred forty-eight thousand, five hundred sixty-one".