88107421 has 2 divisors, whose sum is σ = 88107422. Its totient is φ = 88107420.

The previous prime is 88107407. The next prime is 88107433. The reversal of 88107421 is 12470188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 16112196 = 8485^2 + 4014^2 .

It is a cyclic number.

It is not a de Polignac number, because 88107421 - 2⁷ = 88107293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88107491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44053710 + 44053711.

It is an arithmetic number, because the mean of its divisors is an integer number (44053711).

Almost surely, 2^88107421 is an apocalyptic number.

It is an amenable number.

88107421 is a deficient number, since it is larger than the sum of its proper divisors (1).

88107421 is an equidigital number, since it uses as much as digits as its factorization.

88107421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 88107421 is about 9386.5553319628. Note that the first 3 decimals coincide. The cubic root of 88107421 is about 444.9769310096.

The spelling of 88107421 in words is "eighty-eight million, one hundred seven thousand, four hundred twenty-one".