87527161 has 4 divisors (see below), whose sum is σ = 87567012. Its totient is φ = 87487312.

The previous prime is 87527159. The next prime is 87527171. The reversal of 87527161 is 16172578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16172578 = 2 ⋅8086289.

It can be written as a sum of positive squares in 2 ways, for example, as 36832761 + 50694400 = 6069^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 87527161 - 2¹ = 87527159 is a prime.

It is a super-2 number, since 2×87527161² = 15322007825439842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87527161.

It is not an unprimeable number, because it can be changed into a prime (87527171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16426 + ... + 21091.

It is an arithmetic number, because the mean of its divisors is an integer number (21891753).

Almost surely, 2^87527161 is an apocalyptic number.

It is an amenable number.

87527161 is a deficient number, since it is larger than the sum of its proper divisors (39851).

87527161 is a wasteful number, since it uses less digits than its factorization.

87527161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39850.

The product of its digits is 23520, while the sum is 37.

The square root of 87527161 is about 9355.5951708055. The cubic root of 87527161 is about 443.9979320440.

The spelling of 87527161 in words is "eighty-seven million, five hundred twenty-seven thousand, one hundred sixty-one".