92117521 has 2 divisors, whose sum is σ = 92117522. Its totient is φ = 92117520.

The previous prime is 92117513. The next prime is 92117527. The reversal of 92117521 is 12571129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 44355600 = 6911^2 + 6660^2 .

It is a cyclic number.

It is not a de Polignac number, because 92117521 - 2³ = 92117513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 92117521.

It is not a weakly prime, because it can be changed into another prime (92117527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46058760 + 46058761.

It is an arithmetic number, because the mean of its divisors is an integer number (46058761).

Almost surely, 2^92117521 is an apocalyptic number.

It is an amenable number.

92117521 is a deficient number, since it is larger than the sum of its proper divisors (1).

92117521 is an equidigital number, since it uses as much as digits as its factorization.

92117521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 28.

The square root of 92117521 is about 9597.7872970805. The cubic root of 92117521 is about 451.6278834240.

The spelling of 92117521 in words is "ninety-two million, one hundred seventeen thousand, five hundred twenty-one".