87472573 has 2 divisors, whose sum is σ = 87472574. Its totient is φ = 87472572.

The previous prime is 87472571. The next prime is 87472601. The reversal of 87472573 is 37527478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 42341049 = 6718^2 + 6507^2 .

It is a cyclic number.

It is not a de Polignac number, because 87472573 - 2¹ = 87472571 is a prime.

Together with 87472571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87472571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43736286 + 43736287.

It is an arithmetic number, because the mean of its divisors is an integer number (43736287).

Almost surely, 2^87472573 is an apocalyptic number.

It is an amenable number.

87472573 is a deficient number, since it is larger than the sum of its proper divisors (1).

87472573 is an equidigital number, since it uses as much as digits as its factorization.

87472573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 43.

The square root of 87472573 is about 9352.6773172178. The cubic root of 87472573 is about 443.9056102276.

The spelling of 87472573 in words is "eighty-seven million, four hundred seventy-two thousand, five hundred seventy-three".