89812533 has 16 divisors (see below), whose sum is σ = 121450176. Its totient is φ = 59030400.

The previous prime is 89812531. The next prime is 89812537. The reversal of 89812533 is 33521898.

It is not a de Polignac number, because 89812533 - 2¹ = 89812531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89812491 and 89812500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89812531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94366 + ... + 95312.

It is an arithmetic number, because the mean of its divisors is an integer number (7590636).

Almost surely, 2^89812533 is an apocalyptic number.

It is an amenable number.

89812533 is a deficient number, since it is larger than the sum of its proper divisors (31637643).

89812533 is a wasteful number, since it uses less digits than its factorization.

89812533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its digits is 51840, while the sum is 39.

The square root of 89812533 is about 9476.9474515795. The cubic root of 89812533 is about 447.8291044741.

It can be divided in two parts, 898 and 12533, that added together give a palindrome (13431).

The spelling of 89812533 in words is "eighty-nine million, eight hundred twelve thousand, five hundred thirty-three".