87450313 has 2 divisors, whose sum is σ = 87450314. Its totient is φ = 87450312.

The previous prime is 87450247. The next prime is 87450323. The reversal of 87450313 is 31305478.

87450313 = 6612² + 6613².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 43718544 = 6613^2 + 6612^2 .

It is a cyclic number.

It is not a de Polignac number, because 87450313 - 2⁹ = 87449801 is a prime.

It is not a weakly prime, because it can be changed into another prime (87450323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43725156 + 43725157.

It is an arithmetic number, because the mean of its divisors is an integer number (43725157).

Almost surely, 2^87450313 is an apocalyptic number.

87450313 is the 6613-rd centered square number.

It is an amenable number.

87450313 is a deficient number, since it is larger than the sum of its proper divisors (1).

87450313 is an equidigital number, since it uses as much as digits as its factorization.

87450313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 87450313 is about 9351.4872079258. The cubic root of 87450313 is about 443.8679520342.

The spelling of 87450313 in words is "eighty-seven million, four hundred fifty thousand, three hundred thirteen".