92220581 has 2 divisors, whose sum is σ = 92220582. Its totient is φ = 92220580.

The previous prime is 92220577. The next prime is 92220587. The reversal of 92220581 is 18502229.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 1018081 = 9550^2 + 1009^2 .

It is an emirp because it is prime and its reverse (18502229) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 92220581 - 2² = 92220577 is a prime.

It is a super-2 number, since 2×92220581² = 17009271119955122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92220587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46110290 + 46110291.

It is an arithmetic number, because the mean of its divisors is an integer number (46110291).

Almost surely, 2^92220581 is an apocalyptic number.

It is an amenable number.

92220581 is a deficient number, since it is larger than the sum of its proper divisors (1).

92220581 is an equidigital number, since it uses as much as digits as its factorization.

92220581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 92220581 is about 9603.1547420626. The cubic root of 92220581 is about 451.7962459752.

The spelling of 92220581 in words is "ninety-two million, two hundred twenty thousand, five hundred eighty-one".