85544761 has 2 divisors, whose sum is σ = 85544762. Its totient is φ = 85544760.

The previous prime is 85544743. The next prime is 85544791. The reversal of 85544761 is 16744558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83997225 + 1547536 = 9165^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 85544761 - 2¹¹ = 85542713 is a prime.

It is a super-2 number, since 2×85544761² = 14635812269094242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85544791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42772380 + 42772381.

It is an arithmetic number, because the mean of its divisors is an integer number (42772381).

Almost surely, 2^85544761 is an apocalyptic number.

It is an amenable number.

85544761 is a deficient number, since it is larger than the sum of its proper divisors (1).

85544761 is an equidigital number, since it uses as much as digits as its factorization.

85544761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 85544761 is about 9249.0410854315. The cubic root of 85544761 is about 440.6202701637.

The spelling of 85544761 in words is "eighty-five million, five hundred forty-four thousand, seven hundred sixty-one".