89512505 has 4 divisors (see below), whose sum is σ = 107415012. Its totient is φ = 71610000.

The previous prime is 89512483. The next prime is 89512517. The reversal of 89512505 is 50521598.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50521598 = 2 ⋅25260799.

It can be written as a sum of positive squares in 2 ways, for example, as 48385936 + 41126569 = 6956^2 + 6413^2 .

It is not a de Polignac number, because 89512505 - 2¹⁸ = 89250361 is a prime.

It is a Duffinian number.

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, 8951246 + ... + 8951255.

It is an arithmetic number, because the mean of its divisors is an integer number (26853753).

Almost surely, 2^89512505 is an apocalyptic number.

It is an amenable number.

89512505 is a deficient number, since it is larger than the sum of its proper divisors (17902507).

89512505 is a wasteful number, since it uses less digits than its factorization.

89512505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902506.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 89512505 is about 9461.1048509146. The cubic root of 89512505 is about 447.3298750969.

The spelling of 89512505 in words is "eighty-nine million, five hundred twelve thousand, five hundred five".