87397273 has 2 divisors, whose sum is σ = 87397274. Its totient is φ = 87397272.

The previous prime is 87397259. The next prime is 87397301. The reversal of 87397273 is 37279378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86713344 + 683929 = 9312^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 87397273 - 2⁹ = 87396761 is a prime.

It is not a weakly prime, because it can be changed into another prime (87397253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43698636 + 43698637.

It is an arithmetic number, because the mean of its divisors is an integer number (43698637).

Almost surely, 2^87397273 is an apocalyptic number.

It is an amenable number.

87397273 is a deficient number, since it is larger than the sum of its proper divisors (1).

87397273 is an equidigital number, since it uses as much as digits as its factorization.

87397273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 46.

The square root of 87397273 is about 9348.6508652318. The cubic root of 87397273 is about 443.7781962378.

The spelling of 87397273 in words is "eighty-seven million, three hundred ninety-seven thousand, two hundred seventy-three".