87545 has 4 divisors (see below), whose sum is σ = 105060. Its totient is φ = 70032.

The previous prime is 87541. The next prime is 87547. The reversal of 87545 is 54578.

87545 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10816 + 76729 = 104^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 87545 - 2² = 87541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87541) 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 3 ways as a sum of consecutive naturals, for example, 8750 + ... + 8759.

It is an arithmetic number, because the mean of its divisors is an integer number (26265).

2⁸⁷⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

87545 is a deficient number, since it is larger than the sum of its proper divisors (17515).

87545 is a wasteful number, since it uses less digits than its factorization.

87545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17514.

The product of its digits is 5600, while the sum is 29.

The square root of 87545 is about 295.8800432608. The cubic root of 87545 is about 44.4028093886.

The spelling of 87545 in words is "eighty-seven thousand, five hundred forty-five".