88018561 has 4 divisors (see below), whose sum is σ = 89132800. Its totient is φ = 86904324.

The previous prime is 88018559. The next prime is 88018591. The reversal of 88018561 is 16581088.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88018561 - 2¹ = 88018559 is a prime.

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 88018561.

It is not an unprimeable number, because it can be changed into a prime (88018591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557001 + ... + 557158.

It is an arithmetic number, because the mean of its divisors is an integer number (22283200).

Almost surely, 2^88018561 is an apocalyptic number.

It is an amenable number.

88018561 is a deficient number, since it is larger than the sum of its proper divisors (1114239).

88018561 is a wasteful number, since it uses less digits than its factorization.

88018561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114238.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 88018561 is about 9381.8207721103. The cubic root of 88018561 is about 444.8272881082.

The spelling of 88018561 in words is "eighty-eight million, eighteen thousand, five hundred sixty-one".