85022761 has 2 divisors, whose sum is σ = 85022762. Its totient is φ = 85022760.

The previous prime is 85022737. The next prime is 85022767. The reversal of 85022761 is 16722058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68376361 + 16646400 = 8269^2 + 4080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85022761 is a prime.

It is not a weakly prime, because it can be changed into another prime (85022767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42511380 + 42511381.

It is an arithmetic number, because the mean of its divisors is an integer number (42511381).

Almost surely, 2^85022761 is an apocalyptic number.

It is an amenable number.

85022761 is a deficient number, since it is larger than the sum of its proper divisors (1).

85022761 is an equidigital number, since it uses as much as digits as its factorization.

85022761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 85022761 is about 9220.7787632065. The cubic root of 85022761 is about 439.7222092977.

The spelling of 85022761 in words is "eighty-five million, twenty-two thousand, seven hundred sixty-one".