87605545 has 4 divisors (see below), whose sum is σ = 105126660. Its totient is φ = 70084432.

The previous prime is 87605543. The next prime is 87605579. The reversal of 87605545 is 54550678.

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 10394176 + 77211369 = 3224^2 + 8787^2 .

It is a cyclic number.

It is not a de Polignac number, because 87605545 - 2¹ = 87605543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87605498 and 87605507.

It is not an unprimeable number, because it can be changed into a prime (87605543) 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, 8760550 + ... + 8760559.

It is an arithmetic number, because the mean of its divisors is an integer number (26281665).

Almost surely, 2^87605545 is an apocalyptic number.

It is an amenable number.

87605545 is a deficient number, since it is larger than the sum of its proper divisors (17521115).

87605545 is a wasteful number, since it uses less digits than its factorization.

87605545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17521114.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 87605545 is about 9359.7833842456. The cubic root of 87605545 is about 444.1304316770.

The spelling of 87605545 in words is "eighty-seven million, six hundred five thousand, five hundred forty-five".