88887121 has 2 divisors, whose sum is σ = 88887122. Its totient is φ = 88887120.

The previous prime is 88887089. The next prime is 88887133. The reversal of 88887121 is 12178888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 36469521 = 7240^2 + 6039^2 .

It is a cyclic number.

It is not a de Polignac number, because 88887121 - 2⁵ = 88887089 is a prime.

It is not a weakly prime, because it can be changed into another prime (88887151) 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 as a sum of consecutive naturals, namely, 44443560 + 44443561.

It is an arithmetic number, because the mean of its divisors is an integer number (44443561).

Almost surely, 2^88887121 is an apocalyptic number.

It is an amenable number.

88887121 is a deficient number, since it is larger than the sum of its proper divisors (1).

88887121 is an equidigital number, since it uses as much as digits as its factorization.

88887121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57344, while the sum is 43.

The square root of 88887121 is about 9427.9966588878. The cubic root of 88887121 is about 446.2856746608.

The spelling of 88887121 in words is "eighty-eight million, eight hundred eighty-seven thousand, one hundred twenty-one".