87392273 has 2 divisors, whose sum is σ = 87392274. Its totient is φ = 87392272.

The previous prime is 87392251. The next prime is 87392281. The reversal of 87392273 is 37229378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87011584 + 380689 = 9328^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 87392273 - 2⁶ = 87392209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87392273.

It is not a weakly prime, because it can be changed into another prime (87392233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43696136 + 43696137.

It is an arithmetic number, because the mean of its divisors is an integer number (43696137).

Almost surely, 2^87392273 is an apocalyptic number.

It is an amenable number.

87392273 is a deficient number, since it is larger than the sum of its proper divisors (1).

87392273 is an equidigital number, since it uses as much as digits as its factorization.

87392273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 87392273 is about 9348.3834431414. The cubic root of 87392273 is about 443.7697332228.

The spelling of 87392273 in words is "eighty-seven million, three hundred ninety-two thousand, two hundred seventy-three".