88545781 has 2 divisors, whose sum is σ = 88545782. Its totient is φ = 88545780.

The previous prime is 88545767. The next prime is 88545799. The reversal of 88545781 is 18754588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 26687556 = 7865^2 + 5166^2 .

It is a cyclic number.

It is not a de Polignac number, because 88545781 - 2¹⁷ = 88414709 is a prime.

It is a super-2 number, since 2×88545781² = 15680710665799922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88545731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44272890 + 44272891.

It is an arithmetic number, because the mean of its divisors is an integer number (44272891).

Almost surely, 2^88545781 is an apocalyptic number.

It is an amenable number.

88545781 is a deficient number, since it is larger than the sum of its proper divisors (1).

88545781 is an equidigital number, since it uses as much as digits as its factorization.

88545781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 46.

The square root of 88545781 is about 9409.8767792145. The cubic root of 88545781 is about 445.7136736621.

The spelling of 88545781 in words is "eighty-eight million, five hundred forty-five thousand, seven hundred eighty-one".