87168545 has 4 divisors (see below), whose sum is σ = 104602260. Its totient is φ = 69734832.

The previous prime is 87168533. The next prime is 87168553. The reversal of 87168545 is 54586178.

It is a happy number.

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 25969216 + 61199329 = 5096^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 87168545 - 2¹² = 87164449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87168496 and 87168505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8716850 + ... + 8716859.

It is an arithmetic number, because the mean of its divisors is an integer number (26150565).

Almost surely, 2^87168545 is an apocalyptic number.

It is an amenable number.

87168545 is a deficient number, since it is larger than the sum of its proper divisors (17433715).

87168545 is a wasteful number, since it uses less digits than its factorization.

87168545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17433714.

The product of its digits is 268800, while the sum is 44.

The square root of 87168545 is about 9336.4096418270. The cubic root of 87168545 is about 443.3907197025.

The spelling of 87168545 in words is "eighty-seven million, one hundred sixty-eight thousand, five hundred forty-five".