87273547 has 2 divisors, whose sum is σ = 87273548. Its totient is φ = 87273546.

The previous prime is 87273497. The next prime is 87273607. The reversal of 87273547 is 74537278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87273547 - 2¹⁵ = 87240779 is a prime.

It is a super-2 number, since 2×87273547² = 15233344011922418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87274547) 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, 43636773 + 43636774.

It is an arithmetic number, because the mean of its divisors is an integer number (43636774).

Almost surely, 2^87273547 is an apocalyptic number.

87273547 is a deficient number, since it is larger than the sum of its proper divisors (1).

87273547 is an equidigital number, since it uses as much as digits as its factorization.

87273547 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 87273547 is about 9342.0312031164. The cubic root of 87273547 is about 443.5686823339.

The spelling of 87273547 in words is "eighty-seven million, two hundred seventy-three thousand, five hundred forty-seven".