89550820 has 12 divisors (see below), whose sum is σ = 188056764. Its totient is φ = 35820320.

The previous prime is 89550817. The next prime is 89550823. The reversal of 89550820 is 2805598.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89550817) and next prime (89550823).

It can be written as a sum of positive squares in 2 ways, for example, as 45805824 + 43744996 = 6768^2 + 6614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89550820.

It is not an unprimeable number, because it can be changed into a prime (89550823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238751 + ... + 2238790.

It is an arithmetic number, because the mean of its divisors is an integer number (15671397).

Almost surely, 2^89550820 is an apocalyptic number.

It is an amenable number.

89550820 is an abundant number, since it is smaller than the sum of its proper divisors (98505944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89550820 is a wasteful number, since it uses less digits than its factorization.

89550820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477550 (or 4477548 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 89550820 is about 9463.1295034994. The cubic root of 89550820 is about 447.3936911313.

It can be divided in two parts, 895 and 50820, that added together give a palindrome (51715).

The spelling of 89550820 in words is "eighty-nine million, five hundred fifty thousand, eight hundred twenty".