88351721 has 2 divisors, whose sum is σ = 88351722. Its totient is φ = 88351720.

The previous prime is 88351709. The next prime is 88351759. The reversal of 88351721 is 12715388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82101721 + 6250000 = 9061^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 88351721 - 2¹⁰ = 88350697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88351421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44175860 + 44175861.

It is an arithmetic number, because the mean of its divisors is an integer number (44175861).

Almost surely, 2^88351721 is an apocalyptic number.

It is an amenable number.

88351721 is a deficient number, since it is larger than the sum of its proper divisors (1).

88351721 is an equidigital number, since it uses as much as digits as its factorization.

88351721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 88351721 is about 9399.5596173438. The cubic root of 88351721 is about 445.3878216558.

The spelling of 88351721 in words is "eighty-eight million, three hundred fifty-one thousand, seven hundred twenty-one".