88427561 has 2 divisors, whose sum is σ = 88427562. Its totient is φ = 88427560.

The previous prime is 88427543. The next prime is 88427579. The reversal of 88427561 is 16572488.

It is a balanced prime because it is at equal distance from previous prime (88427543) and next prime (88427579).

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 20529961 = 8240^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 88427561 - 2⁶ = 88427497 is a prime.

It is not a weakly prime, because it can be changed into another prime (88427861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44213780 + 44213781.

It is an arithmetic number, because the mean of its divisors is an integer number (44213781).

Almost surely, 2^88427561 is an apocalyptic number.

It is an amenable number.

88427561 is a deficient number, since it is larger than the sum of its proper divisors (1).

88427561 is an equidigital number, since it uses as much as digits as its factorization.

88427561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 88427561 is about 9403.5929835356. The cubic root of 88427561 is about 445.5152236339.

It can be divided in two parts, 88427 and 561, that added together give a palindrome (88988).

The spelling of 88427561 in words is "eighty-eight million, four hundred twenty-seven thousand, five hundred sixty-one".