88561109 has 64 divisors (see below), whose sum is σ = 127733760. Its totient is φ = 59304960.

The previous prime is 88561103. The next prime is 88561127. The reversal of 88561109 is 90116588.

It is not a de Polignac number, because 88561109 - 2⁸ = 88560853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88561103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 675974 + ... + 676104.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 2^88561109 is an apocalyptic number.

It is an amenable number.

88561109 is a deficient number, since it is larger than the sum of its proper divisors (39172651).

88561109 is a wasteful number, since it uses less digits than its factorization.

88561109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 88561109 is about 9410.6912073450. The cubic root of 88561109 is about 445.7393910742.

The spelling of 88561109 in words is "eighty-eight million, five hundred sixty-one thousand, one hundred nine".