87169545 has 24 divisors (see below), whose sum is σ = 151876296. Its totient is φ = 46249728.

The previous prime is 87169543. The next prime is 87169547. The reversal of 87169545 is 54596178.

It is an interprime number because it is at equal distance from previous prime (87169543) and next prime (87169547).

It can be written as a sum of positive squares in 4 ways, for example, as 32216976 + 54952569 = 5676^2 + 7413^2 .

It is not a de Polignac number, because 87169545 - 2¹ = 87169543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87169545.

It is not an unprimeable number, because it can be changed into a prime (87169543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3949 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (6328179).

Almost surely, 2^87169545 is an apocalyptic number.

It is an amenable number.

87169545 is a deficient number, since it is larger than the sum of its proper divisors (64706751).

87169545 is a wasteful number, since it uses less digits than its factorization.

87169545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10041 (or 10038 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 87169545 is about 9336.4631954504. The cubic root of 87169545 is about 443.3924152263.

The spelling of 87169545 in words is "eighty-seven million, one hundred sixty-nine thousand, five hundred forty-five".